SRU APX Carbine Conversion Kit for Action Army AAP-01 Gas Blowback Airsoft Pistol
(Color: Two-Tone OD Green / Kit Only)

"even though its a 3d print it is SUPER durable I have dropped it smashed it into buildings and its just is great if you want a barrel so it fits perfectly from the aap-01 to the end of the barrel get the TM vsr 303 mm 6.03 barrel it is perfect and if you need any replacement screws for it go to Lowes and get 3-.5 mm screws they are perfect

"I bought one of these, and it's pretty alright for what it is. It's a 3D printed carbine kit that's supposed to work with the AAP-01, and it does!

As it is 3D printed, it is recommended to avoid extreme temperature changes. I live over in a high desert so I have to be extra careful during the summer with this carbine kit. The print quality on the one I received seems a bit rough around the pin holes and has a bit of warping around the stock arms, but it appears sturdy and was able to handle multiple magazines of full auto fire through it without apparent wear and tear around the important areas.

That being said, the kit itself requires some wear to make it consistent. It comes with all necessary parts to mount it to the AAP-01. Some of the parts are also fragile, such as the bolt extension, (which is necessary for the gun to work.) The additional magwell in the front WILL latch on to the magazines and not want to let go without a lot of persuasion, but works best with the older AAP/Glock magazine patterns. If you have a beard or other facial hair, the stock will try to eat any stray hairs near its pinch points.

If you want to use it effectively, you will need to get either a barrel extension or a really long mock suppressor, or both if you want to be fancy. If you go this way you may have to get your now APX re-chronographed at the arena you use it at, since there's a chance it can change how fast or slow the BBs fly out. Disassembling it with the barrel extension is possible, but definitely not with a mock suppressor.

It is M-LOK rail compatible (Additional rails not included), and the built-in printed rails can hold zero with optics and iron sights. At the time of writing this I am using it with iron sights, and there's enough rail space on top to have a good sight radius for close to medium range. Top rail can also handle large optics and scopes but it is not recommended since it's an SMG-sized kit.

Overall, 6.75/10. It works, but it has a few flaws I noticed during my skirmishes with it and wanted to provide a thorough review for anyone considering it.