Precision Performance Is Delivered by the EPIC ONE 550 Alu PCP Bullpup Air Rifle
Exceptional accuracy and compact handling are combined in the EPIC ONE 550 Alu PCP Bullpup Air Rifle. Serious target work, hunting practice, and competition use are supported by this Czech-engineered platform. A 550 mm CZUB barrel, a robust aluminum air tube, and a highly refined regulated PCP system are integrated so that consistent velocity and confident shot placement can be achieved by shooters of every experience level.
Unmatched manufacturing quality is demonstrated throughout the design. A single-piece monoblock is machined on a five-axis CNC mill, after which the action, regulator, and barrel interface are aligned with exceptional rigidity. As a result, harmonic vibration is reduced and long-term reliability is increased.
Compact Bullpup Architecture Is Optimized for Control
A short overall length of approximately 885–892 mm is maintained even though a full 550 mm barrel is fitted. Balance is therefore improved, and a stable hold can be adopted from supported or unsupported positions. An adjustable stock and cheekpiece are provided so that length of pull and eye alignment can be tailored. An AR-15-compatible grip is also fitted, allowing familiar hand placement to be used by a wide range of shooters.
Ambidextrous operation is enabled by a side lever that can be swapped from one side to the other. Consequently, left- and right-handed users are equally well served. Smooth cocking effort is further reduced by the high-power balanced valve, which permits high output with relatively light hammer-spring tension.
Barrel, Plenum, and Power System Are Engineered for Consistency
A premium 550 mm CZUB non-choked barrel with 12 grooves and a 17.7-inch twist rate is installed. Tensioning within the carbon-fiber shroud is employed so that barrel harmonics can be controlled and grouping potential can be maximized. An integral silencer is housed inside the shroud, and a ½-inch UNF thread is retained so that additional moderation can be added when required.
Regulated PCP Performance Is Sustained Shot After Shot
A large aluminum reservoir (commonly specified at 605 cc plus a 95 cc power plenum on the Alu configuration) is charged to a maximum of 300 bar. An externally adjustable regulator, typically operating across a 50–190 bar range, is then used to stabilize working pressure. Two gauges are fitted so that bottle pressure and regulator setting can be monitored at a glance.
Because wasted air is minimized by the balanced high-power valve, a generous number of consistent shots can be obtained from each fill. Slug-capable magazines that accept projectiles up to 14 mm in length are supplied, with typical capacities of 14 rounds in .177, 12 rounds in .22, and 10 rounds in .25. Magnetic retention is used so that magazines can be changed quickly and securely.
Highlighted product features include:
- 550 mm CZUB non-choked barrel — 12 grooves and 17.7″ twist for pellet and slug stability
- Aluminum-tube Alu configuration — approximately 605 cc reservoir plus 95 cc plenum
- Externally adjustable regulator — fine control of working pressure for velocity consistency
- HIGH-POWER balanced valve — high output with reduced cocking effort and efficient air use
- Movable Picatinny rail with 30 MOA incline — optics mounting flexibility for longer-range zero
- Ambidextrous swappable side lever — inclusive operation for left- and right-handed shooters
- Adjustable cheekpiece and stock — personalized fit for comfort and repeatable cheek weld
- AR-15 compatible grip — familiar ergonomics and aftermarket grip options
- Integral shrouded silencer plus ½” UNF thread — quieter shooting with expansion capability
- Slug-ready magnetic magazines — .177 / .22 / .25 capacities with 14 mm projectile length support
- Manual safety and two-stage adjustable trigger — controlled, repeatable shot release
- Maximum fill of 300 bar — high-capacity charging with standard 1/8″ probe compatibility

Comfort, Optics, and Field Versatility Are Built In
A movable Picatinny rail with a 30 MOA slope is fitted so that scopes and red-dot sights can be positioned for both close work and extended-range trajectories. Additional accessory rails and QD sling points are typically provided, allowing bipods, lights, or slings to be attached without compromising the compact profile.
Inclusive design choices are evident throughout. Adjustable furniture, a reversible lever, and a familiar grip geometry mean that a comfortable, repeatable shooting position can be established by a broad community of users. Whether backyard practice, pest management within legal limits, or formal precision disciplines are pursued, the same platform can be adapted.
Maintenance and Ownership Are Kept Straightforward
External hammer-spring adjustment is accessible above the butt pad, so power can be tuned without complete disassembly. Caliber-change options are offered on the EPIC ONE family, allowing future flexibility when regulations and shooting goals evolve. A padded case, filling probe, and basic service items are commonly supplied so that the rifle can be put into service promptly.
Responsible ownership remains essential. Local airgun laws, energy limits, and licensing requirements must always be observed. Safe handling, eye protection, and a verified backstop should be used on every session.
Why the EPIC ONE 550 Alu PCP Bullpup Air Rifle Is Chosen
Precision engineering from the Czech Republic is paired with practical field features in this compact bullpup. Consistent regulated output, a tensioned CZUB barrel, and shooter-focused adjustability are brought together so that confidence behind the trigger can be built quickly. Compact length is retained without sacrificing barrel performance, while the aluminum-tube layout keeps weight near 3.9 kg for comfortable all-day use.
When a premium, conversion-ready PCP bullpup is required—one that can be fitted to different physiques, shooting styles, and optic setups—the EPIC ONE 550 Alu configuration is ready to be put to work. Explore available calibers and furniture options, confirm legal power settings for your region, and add the matching optics and filling equipment so that every session can begin with a rifle that is already tuned for the task.
Calibres, Legal Power, and Accessory Options
Calibre choice, legal energy limits, and supporting accessories determine how this compact regulated bullpup is actually used. A single platform can be specified in more than one bore, then paired with magazines, optics, filling gear, and moderation so that the same handling characteristics are retained across different tasks. Local law always comes first. Energy, licensing, and permitted use vary by country and sometimes by region, so the configuration that is purchased must match the certificate or exemption that is already held.
Available Calibres and Magazine Capacity
Three common PCP calibres are offered on this family of rifles. A .177 / 4.5 mm barrel is selected when flat trajectory, high shot count, and paper or small reactive targets are the priority. A .22 / 5.5 mm barrel is chosen when a balance of pellet weight, wind resistance, and practical field energy is required. A .25 / 6.35 mm barrel is specified when heavier projectiles and greater on-target authority are preferred at moderate distance, provided the legal energy ceiling allows that setup.
Magazine capacity is reduced as projectile diameter increases. Typical figures are fourteen rounds in .177, twelve rounds in .22, and ten rounds in .25. Magazines are designed so that longer slugs—up to about 14 mm—can be loaded when the chosen ammunition and twist rate support them. Magnetic retention is used so that a magazine can be seated securely and removed without tools. Spare magazines are therefore among the first accessories that should be added, because a field session is slowed whenever a single magazine must be refilled by hand.
Calibre-change capability is described by the manufacturer on some configurations. When a barrel and magazine set can be exchanged, the same action and stock can be kept while the bore is matched to a new discipline or a new legal limit. Any conversion should be completed with the correct barrel, probe, and magazine so that feeding and sealing remain reliable.
Calibre and feeding snapshot:
- .177 (4.5 mm) — highest magazine count, flatter indoor and short-range trajectory
- .22 (5.5 mm) — widely used all-round pellet and slug option
- .25 (6.35 mm) — heavier projectiles for field use where energy rules permit
- Magazine capacities — typically 14 / 12 / 10 respectively
- Slug length — magazines accept projectiles up to approximately 14 mm
- Interchangeable barrels — available on designated setups with matching magazines
FAC, Sub-12 Limits, and Responsible Power Setting
Power is not a single factory number. Fill pressure, regulator setting, hammer-spring tension, barrel length, and ammunition all influence muzzle energy. A maximum fill of 300 bar is provided, while the external regulator is commonly adjustable across a broad working band so that velocity can be stabilized rather than left to dump from a falling bottle curve. A large plenum is fitted on the 550 mm configuration to support that consistency.
In the United Kingdom, air rifles that remain at or below 12 ft-lbs (approximately 16.3 joules) can be held without a firearm certificate in most circumstances, subject to other legal duties. Configurations advertised near 11.5 ft-lbs are intended for that unlicensed category. Any tune that pushes energy above the 12 ft-lbs threshold requires a valid FAC, appropriate storage, and use only in accordance with certificate conditions. Other countries apply different ceilings, licensing, and transport rules. Those rules must be checked before a high-power regulator setting is used.
Higher outputs are mechanically possible on this design. Published figures for related barrel lengths and .25 ammunition have included factory-style settings in the 80–90 joule region and, on longer barrels with open valve settings, substantially higher energy. Those levels are not automatic and are not legal everywhere. An externally accessible hammer-spring adjuster allows tension to be increased or reduced, but the resulting energy should be verified with a chronograph and the correct projectile weight. Guesswork is not a substitute for measurement.
Inclusive, responsible practice means the rifle is set for the certificate that is held—not for the highest number that can be extracted from the valve. A lower, consistent setting is often more useful than a peak figure that empties the cylinder quickly and falls outside the law.
Power and compliance points:
- Maximum fill — 300 bar / approximately 4,350 psi
- Regulator — externally adjustable for a stable working pressure
- UK sub-12 — keep measured energy at or below 12 ft-lbs unless an FAC is held
- FAC / high-power use — only where licensed, stored, and used lawfully
- Verification — chronograph every new pellet, slug, and spring setting
- Two gauges — bottle pressure and regulator pressure should be monitored together
Accessories That Complete the Rifle
A movable Picatinny rail with a 30 MOA incline is fitted so that a scope can be mounted with enough elevation for longer zeros. Quality rings matched to tube diameter, a level, and a throw lever or flip caps turn that rail into a usable sighting system. Compact first- or second-focal-plane scopes are commonly chosen because the bullpup’s length already keeps the package short.
An integral shroud houses a baffle-style moderator, and a ½-inch UNF thread remains available for an additional silencer where moderation is legal. Extra magazines, a padded case, and the supplied 1/8-inch fill probe form the minimum working kit. A pump or compressor rated for 300 bar, plus a hose with a compatible coupler, is required unless filled bottles are swapped.
Furniture and support items extend comfort. An AR-15-pattern grip can be replaced with an aftermarket unit if a different angle is preferred. A sling on the QD points frees the hands during walks between lanes. A light bipod or shooting sticks attach to forend rail space where it is provided. Spare seals and a small tool for the regulator key keep the rifle serviceable away from the workshop.
Optics, moderation, filling, and magazines should be chosen as a set. A high-power FAC setup is wasted if the scope cannot track, just as a legal-limit target rifle is limited if only one magazine is carried. When calibre, measured energy, and accessories are aligned with the intended use and the law, the rifle can be shot with confidence rather than with constant adjustment.
Epic Airguns, Hatsan, Bintac and High-Performance PCP Air Rifles
Modern epic airguns continue to attract shooters who want advanced PCP technology, adaptable configurations, precision, and high-capacity air systems. Whether someone searches for epic air, epic 1, epic one, epic1, or the epic one air rifle, the interest generally centers on premium compressed-air platforms built for accurate shooting. The growing Epic lineup also includes searches for epic 2, the epic 2, epic 2.0, epic two lite, and epic two walnut, giving enthusiasts several terms to explore when comparing configurations, materials, and performance.
Shooters researching an air rifle com resource or a specialized pcp air gun shop may also encounter terms such as epicair, airgun one incorporated, 30 epic, epic optics, epic eagle, epic vision, airpne, and pist2 while comparing manufacturers, accessories, optics, and PCP platforms. Other searches, including pellet gun yeeps, kalibrgun snipe 2, air gun makers, and compressed air rifles, reflect how broad the modern airgun market has become.
For larger-caliber and tactical PCP enthusiasts, products associated with bintac aea harpoon, bintac t9 full auto, bintac mcar 457, and aea terminator have generated interest among buyers looking beyond conventional sporting rifles. Shooters researching anti air tanks may instead be looking for filling equipment and high-pressure storage solutions, while searches for bintac t9 price often come from buyers comparing premium PCP platforms before making a purchase.
Interest in a bee bee gun rifle can range from recreational plinking to entry-level target shooting, whereas searches such as zeus 72 cal air rifle price focus on extremely large-bore PCP technology. A suitable air tank for pcp airguns is particularly important for shooters who want convenient refilling away from a compressor or dive shop.
Large-caliber PCP platforms are also reflected in searches such as aea harpoon air gun, airgun shotgun, automatic air gun, air powered 50 cal rifle, and aea megalodon for sale. These terms demonstrate how air-powered technology has expanded far beyond the traditional pellet rifle and into increasingly specialized shooting platforms.

Hatsan Air Rifles, PCP Models and Popular Configurations
Among established manufacturers, hatsan blitz remains one of the most recognizable search terms for shooters interested in rapid-fire PCP designs. The wider hatsan air rifle lineup covers numerous shooting applications, while models such as the hatsan sortie, hatsan model 95, hatsan harpoon, hatsan hercules, and hatsan piledriver appeal to different sections of the airgun market.
Buyers searching hatsanusa or hatsan usa are often looking for Hatsan products, specifications, service information, accessories, or replacement components available within the American market. Meanwhile, the hatsan sortie tact semi-auto pcp offers a semiautomatic-style platform, and interest in hatsan sortie accessories gives owners options for refining their setup.
Traditional spring-powered enthusiasts frequently research the hatsan 135, hatsan 125, hatsan mod 95, and the shorter mod 95 search phrase. PCP shooters may instead consider the hatsan bullboss, hatsan hercules bully, hatsan flash, hatsan invader, or hatsan flashpup qe.
Value-conscious customers can also explore hatsan refurbished products and other refurbished air rifles when available. Models such as the hatsan airtact air rifle, hatsan neutron star, hatsan zada, and hatsan 135 carnivore broaden the selection even further.
Because terminology varies among shoppers, searches may include air rifle, air rifles, airguns, hatsun blitz, hatzan blitz, or the broader phrase hatsan air guns. Likewise, shooters researching PCP-specific options frequently use hatsan pcp when comparing regulated systems, air cylinders, magazines, power levels, and available calibers.
Hatsan Blitz, Big-Bore PCP and Semi-Automatic Options
The hatsan blitz full automatic platform is especially notable among buyers interested in fast cycling and high-capacity PCP technology. Searches such as hatsan blitz 30 cal and hatsan blitz .30 cal commonly focus on the larger-caliber Blitz configuration, while terms such as blitz guns and blitz 777 may appear during broader product research.
For shooters interested in other compact pneumatic platforms, the hatsan velox and hatsan jet 2 offer additional choices. Searches for jet ii may refer to the same general family, while hatsan jet 2 accessories can help owners locate compatible components and upgrades.
Additional Hatsan searches include hatsan sortie tact, hatsan airtact, hatsan factor rc, and hatsan 135 vortex air rifle. Buyers seeking larger projectiles and increased energy may also investigate the hatsan big bore carnivore rifle or related big-bore configurations.
The bullmaster provides another PCP platform for shooters comparing bullpup-style layouts, while invader auto attracts interest from users researching semiautomatic air rifle designs.
Calibers, Pellets, Optics and Shooting Accessories
Choosing the correct caliber remains an important part of selecting an airgun. A 30 cal air rifle can offer considerably more projectile mass than a traditional .177 caliber rifle, although the best choice depends on intended use, legal requirements, shooting distance, and available ammunition.
A quality air pellet gun should be paired with ammunition suited to its barrel and power output. Some users may type pallet gun when searching for pellet-powered equipment, while competitive shooters might research premium ammunition such as h&n field target trophy bleifrei.
Optics are equally important for accurate shooting. A basic 4×20 optic may be sufficient for recreational use at modest distances, whereas more advanced scopes can provide adjustable magnification, parallax correction, and improved reticles for longer-range shooting.
Searches involving econ ii may relate to specific airgun equipment or components, while crow magnum remains another term encountered by enthusiasts researching established airgun products.
PCP Air Supply, Range and Specialized Shooting Equipment
Unlike spring-powered rifles, PCP systems rely on compressed air stored at high pressure. Therefore, shooters comparing compressed air rifles should consider cylinder capacity, regulator performance, fill pressure, shot count, and refill equipment alongside muzzle performance.
A dependable air tank for pcp airguns can simplify field refilling, while suitable fill adapters and rated high-pressure equipment should always be used according to manufacturer specifications.
The practical range of air rifle performance varies considerably according to caliber, projectile design, muzzle energy, weather conditions, optics, and shooter ability. Consequently, there is no single universal air rifle range that applies to every platform.
Some shooters also explore an arrow launcher configuration, which uses air pressure to propel compatible arrows or bolts rather than conventional pellets. This specialized equipment demonstrates the versatility available across today’s airgun market.
From epic one and epic two walnut configurations to hatsan blitz, aea terminator, and large-bore PCP platforms, today’s market includes recreational rifles, precision systems, semiautomatic designs, tactical configurations, and specialized high-powered airguns. Comparing construction quality, caliber, air capacity, ammunition compatibility, intended shooting application, and available accessories can help buyers identify the platform that best matches their needs.

Frequently Asked Questions
Clear answers help a compact regulated bullpup be chosen, set up, and used lawfully. The questions below are written so that first-time PCP owners and experienced shooters can find practical detail without wading through marketing language. Local regulations still override every general note. Energy limits, licensing, transport, and hunting rules must be confirmed for the country and region in which the rifle will be kept.
General Setup and Intended Use
Who is a compact PCP bullpup intended for?
A short, adjustable pre-charged rifle is intended for shooters who need a full-length barrel without a long overall package. Bench work, club ranges, permitted pest control, and field-target style lanes can all be supported when the stock, cheekpiece, and optic are set correctly. Inclusive furniture matters here. Length of pull and comb height can be altered so that smaller-framed and taller shooters are not forced into the same fixed stance.
Is a bullpup harder to learn than a conventional stock?
A short learning period is normal because the action sits farther rearward and the balance point feels different. After the side lever is placed on the preferred side and a consistent cheek weld is established, cycling and shouldering become repeatable. Dry practice with an empty, confirmed-safe action is recommended before live fire. Coaching can be given from either side of the shooter because the muzzle does not project as far forward as on a long sporter.
Can the same rifle be used for targets and field work?
Yes, provided legal energy and ammunition are matched to the task. A lower, consistent regulator setting is often preferred for paper and steel. A different pellet or slug, still within the law, may be selected for field use. Two zeros can be recorded—one for a close club distance and one for a typical field distance—so that the turret or reticle is not guessed in the moment.
Calibres, Magazines, and Ammunition
Which calibres are commonly offered?
Three PCP calibres are typically listed: .177 (4.5 mm), .22 (5.5 mm), and .25 (6.35 mm). Trajectory and shot count favour the smaller bore. Wind resistance and on-target mass favour the larger bores when energy rules allow them. The “best” calibre is therefore the one that fits both the intended distance and the legal ceiling that is held.



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