AEA HP Max — Compact Big Bore PCP Air Rifle

AEA HP Max Review — Pocket-Sized Big Bore Power

The AEA HP Max is a compact PCP air rifle that delivers serious big bore performance in a portable package. The bolt-action carbine measures just 787mm overall with the stock extended, folding down to 510mm for easy transport in a backpack . Available calibres range from .30 up to .50, with energy outputs exceeding 300 foot-pounds in full-power export versions . The side lever action and 11mm dovetail scope rail make this a versatile hunting tool for shooters who need power without bulk. For UK shooters, the HP Max is supplied in a 6-7.5 Joule (approximately 4.5-5.5 ft/lb) configuration, making it legal for certificate-free ownership .

AEA HP Max UK — UK Legal Version

The AEA HP Max UK market receives the rifle in a reduced power configuration. UK-legal HP Max rifles are factory-set to approximately 6 foot-pounds of muzzle energy, delivering roughly 240 feet per second with a 44 grain pellet in 9mm calibre . This power level makes the HP Max similar to a paintball marker in trajectory and impact, perfect for plinking, tin can bashing, and close-range target work. The rifle remains mechanically identical to the full-power export version, with the same 300cc air reservoir, 300 bar fill pressure, and folding stock design . Owners who move abroad or obtain the necessary licences can convert the rifle to full-power configuration.

AEA HP Max 9mm — The Popular Calibre

The 9mm (.35 calibre) HP Max is the most sought-after version of this compact PCP. The 9mm model features an 8-shot rotary magazine and a 330mm barrel . In full-power form, the .35 calibre HP Max produces approximately 200 Joules (150 foot-pounds) of muzzle energy, making it suitable for medium-sized game hunting . The UK legal 7.5 Joule version offers the same handling and magazine capacity with reduced power for compliant shooting. The rifle comes with two magazines in the box, a fill probe, and a folding stock mechanism .

AEA HP Max Problems — Honest Owner Feedback

The HP Max has received extensive owner feedback, with several common issues worth discussing. The most significant problem reported by multiple owners is the UK/European version arriving with a regulator that restricts power, even when the advertised full-power conversion kit is installed . One owner discovered an internal ring was blocking the transfer port, requiring removal of the regulator components to achieve full power . O-ring failures are also common, with owners reporting that sharp edges inside the receiver can slice O-rings during assembly or disassembly . The fill probe O-rings are particularly prone to failure, though replacing the gauge meter with a Foster fitting eliminates this problem entirely . Some rifles shipped without valve return springs, making them impossible to fill when completely degassed — owners recommend using a Biro pen spring as a temporary fix or cocking the gun before filling .

AEA HP Max MK2 Semi-Auto — The Upgrade

The AEA HP Max MK2 Semi-Auto adds semi-automatic capability to the HP Max platform. The MK2 features a regulated system that delivers consistent power and reliable cycling, producing 60-130 Joules in semi-auto mode depending on configuration . The MK2 is available in .30 and .35 calibre, with an 8-round magazine and a weight of approximately 3kg . The MK2’s semi-auto action requires at least 30 Joules to cycle reliably — at lower UK legal power levels, the rifle reverts to a straight-pull repeater, requiring manual bolt operation after each shot . This makes the MK2 legal for UK sale as a repeater while retaining the ability to function as a true semi-auto when exported to countries where that is permitted.

AEA HP Max For Sale UK — In Stock at Fieldcraft Airguns

Fieldcraft Airguns has the AEA HP Max in stock now. We offer the bolt-action model in .30, .35, .45, and .50 calibre, all supplied in UK legal 6-7.5 Joule (approximately 4.5-5.5 ft/lb) configuration. The MK2 Semi-Auto model is available in .30 and .35 calibre . Every rifle includes two magazines, a fill probe, and a folding stock mechanism . Every AEA HP Max sold by Fieldcraft Airguns comes with our exclusive 12 month warranty and delivery straight to your door. We recommend adding a high-pressure stirrup pump or air tank capable of 300 bar fills to your order. Also add a tin of quality slugs in your chosen calibre — heavier projectiles perform better at lower velocities in the UK legal version. For owners who want to convert to full power, we recommend contacting a qualified airgunsmith as the modification requires careful mechanical work and may affect your warranty status .