Self Locking Bolt locks when out of BBs

Bushing: 8mm Oiless

Fully Adjustable

and video games

and Other Compatible GBB Airsoft Pistols

Lancer Tactical HPA 70 Degree M4 Magazine Adaptor For GBB Airsoft Rifles - BLACK M&P9 Self Locking Bolt locks whenLancer Tactical HPA 70 Degree M4 Magazine Adaptor For AEG Airsoft Rifles Upgrade your GBB airsoft rifle with the Lancer Tactical HPA 70 Degree M4 Magazine Adaptor. This high quality CNC machined metal adaptor features durable construction, a steel output valve, and a 6061 aluminum casing with an AEG magazine catch. Designed for easy installation, it includes an EU US input adaptor (5mm screw thread) and an adjustable screw for fitting various AR 15