The sweet spot for most AAP-01 builds. At 129 mm you keep the gun compact and fast to handle, while the Morpheus barrel and SR Hop bucking give you the tight, predictable groups that make people ask what you did to your pistol. Everything you need is in this one set.

What's included

• "Morpheus" Dual Bore AAP-01 Barrel 129MM – SUS304 seamless stainless steel with an enlarged, unbridged window, made for the AAP-01 so the barrel and bucking combo seats perfectly in your hopup.
• SR Hop Bucking 60° (Purple) – a hybrid between an R-hop and a bucking with an extended patch, now one of the most used buckings in AAP-01 pistols.
• AAP-01 TDC + Prowler Hop Plate – replaces the stock hopup parts so you can dial the hop in from the top with a hex key, straight from top dead centre, with a CNC aluminium Prowler nub.
• AAP-01 TDC Hole Tool – places the hole in your upper exactly where the TDC kit needs it.
• AAP-01 Ultimate Spring Set (8 springs) – four recoil springs and four nozzle return springs to match your gas, mags and local temperatures.
• AAP-01 Marine Grade Stainless Steel Screw Set – A4 stainless screws for the upper receiver and internals, two of them with thread lock.

Why buy it as a bundle

These parts are meant to work together: the barrel and bucking set the flight path, the TDC kit lets you fine-tune that hop instead of guessing, the spring set keeps the cycle consistent whatever gas and mags you run, and the stainless screws stop anything working loose mid-game. One order, one build session, no half-finished project on your desk.

Good to know

• Made for the Action Army AAP-01. The 129 mm barrel keeps the pistol compact, ideal as a sidearm or a nimble primary.
• The TDC kit requires a 2 mm hole in your upper. The included tool makes it foolproof, but if you'd rather not drill, hand it to your local tech.
• Always check your joule output after installation before you take it to the field.