Articles · Sep 29, 2026
The Ultimate AAP-01 3D Print Guide: Top 10 Mods & Conversion Kits
Upgrade your Action Army AAP-01 with the top 10 3D printed parts. From short stroke buffers to full carbine kits, discover the best STL files and print tips.
When Action Army launched the AAP-01 "Assassin" in 2020, they set out to break the cycle of expensive, repetitive Glock and Hi-Capa clones. Best known as an internal parts manufacturer, Action Army solved a long-standing airsoft headache by pairing ultra-reliable, universally available TM-spec Glock mechanics with the fixed-barrel, cylindrical receiver design of the Ruger MK series. The result was a budget-friendly platform with outstanding gas efficiency, snappy cycle times, and out-of-the-box full-auto capability.
Crucially, because only a lightweight internal bolt moves while the outer barrel and receiver stay static, adding external weight doesn't compromise cycling reliability. This clever architecture transformed the AAP-01 into the ultimate blank canvas for makers—allowing everything from subtle ergonomics tweaks to full-blown carbine conversions without affecting performance. Here are the 10 best 3D printed parts to take full advantage of this versatile platform.
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01
AAP 01 magwell
A super easy to print, but very nice looking and handy mod to make reloads super quick.
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Get the files from Printables - Garage Rat Designs
Slicebuild does not host a download for this part. The model above is for looking around only.
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02
AAP-01 Barrel V2 MRS
Very cool and effective way of completely transforming the front end of the AAP-01 with the utility of having picatinny rails.
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Get the files from Makerworld - gundalf_3d
Slicebuild does not host a download for this part. The model above is for looking around only.
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03
Short Stroke Set
Add these shims to your AAP-01 bolt to make it short stroke, making for rapid shooting.
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Get the files from Makerworld - Chybis
Slicebuild does not host a download for this part. The model above is for looking around only.
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04
AAP-01 One Side Charging Handle Ambidextrous left / right
This modification makes the charging handle stick our further from the back of the gun, making for more snappy reloads.
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Get the files from Printables - Tidal
Slicebuild does not host a download for this part. The model above is for looking around only.
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05
AAP 01 trigger
A nice stylish flat trigger.
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Get the files from Printables - Garage Rat Designs
Slicebuild does not host a download for this part. The model above is for looking around only.
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06
Cyberpunk Lexington Airsoft
A famous gun from Cyberpunk 2077 with AAP-01 Internals - very cool!
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Get the files from Printables - Bount313
Slicebuild does not host a download for this part. The model above is for looking around only.
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07
Magazine Floor Plate Glock/AAP-01
Design to make your AAP-01 magazines as ergonomic as possible and to protect them if they hit the floor.
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Get the files from Thingiverse - Forran
Slicebuild does not host a download for this part. The model above is for looking around only.
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08
Thumb Rest
A place to rest your left thumbnail when shooting, helps keep the AAP-01 stable.
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Get the files from Printables - amazingRoyce
Slicebuild does not host a download for this part. The model above is for looking around only.
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09
WE Glock / AAP-01 Magazine GBB BB Speedload Adapter
A simple sleeve you put onto your magazines that means you can connect a standard speed loader and fill up your mags quickly!
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Get the files from Printables - Rec0iL
Slicebuild does not host a download for this part. The model above is for looking around only.
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10
Upper for the Firewad AAP-01 lower conversion kits
for the serious AAP-01, this essentially converts the pistol into a full-on SMG, it enables the use of standard M4 mags and combined with an HPA system, give you some serious skirmishing power.
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Get the files from Makerworld - Fishy Airsoft Creations
Slicebuild does not host a download for this part. The model above is for looking around only.
There you have it, some of the coolest Action Army AAP-01 mods I have found across the internet and a few I have printed myself.