Upper_receiver 3D Print Models
10000+ 3D Print Models
cults3d.com
Hk G3 (AEG) Lower Receiver for AR Pistol Grip & Controls
cults3d.com
Airsoft carbon fiber upper receiver (AEG/HPA) m4/ar15
FREE
makerworld.com
Open-source upper receiver for forward ejection, suitable for all AR-style SD toys