Built from the ground up. Colt Lic. Receiver with Stock internals except for geissele replica trigger, samoon enhanced recoil spring. Real steel BCM Milspec Buffer tube Fits with no modifications Real steel BCM grip Real steel Magpul B.A.D lever Real Steel BCM charging handle had to do some filing to fit Real steel BCM Stock Real Steel Magpul ASAP sling plate Real Steel BCM trigger guard had to sand down to fit. Tnt Hop up kit: chamber, bucking, inner barrel RA-Tech NPAS nozzle comes with fps adjusting tool. Currently set to 400 fps with .20s Gun runs best with .32 bbs or heavier. Scalarworks lower third replica red dot mount Aimpoint replica t2 red dot Replica surefire light and pressure pad Real Steel BCM vertical grip Mlok Airsoft Artisan Surefire Replica 3 prong flash hider. Airsoft Artisan BCM handguard replica Gun runs perfectly fine ran this in milsims and normal pick up games. Upper receiver has paint scratches where the bolt goes into as you can see in the pics. It came like that when purchased from Samoon. This does not affect performance whatsoever. Comes with 9 GHK mags none are leaking. Double checked all mags before posting this. Feel free to message me for any questions that you may have. Freeshipping and sales are final. In total this ran me about almost 2k$ FREE SHIPPING Also comes with stock ghk nozzle and stock inner barrel and hop up for free.