The Hop-up Chamber MXW unit is wisely equipped with a self-centering inlet O-ring to ensure the hop-up unit is inserted exactly in the center of the 11mm to 11

Featuring a fully upgradable gearbox and realistic field stripping

Self Locking Bolt locks when out of BBs

and video games

Nylon fiber outer body with metal outer barrel and gas assembly

Lancer Tactical HPA 70 Degree M4 Magazine Adaptor For GBB Airsoft Rifles - BLACK M&P9 The Hop-up Chamber MXW unitLancer 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