Guns Modify Aluminum 7003T6 CNC Speed Zero Bolt Carrier for Tokyo Marui M4 MWS - Blue Open-Chamber Series It features a low bore

It features a low bore axis providing minimized perceived recoil and reducing muzzle rise for a perfect weapon controllability

Non Slip Texture on Grip

Rail Cover x 2 & Foregrip

Multi-Magazine Catch  7

tactical and sporting usage  Fit for most Glock Series Airsoft Pistol

Guns Modify Aluminum 7003T6 CNC Speed Zero Bolt Carrier for Tokyo Marui M4 MWS - Blue Open-Chamber Series It features a low boreThe bolt carrier is an essential part any M4 GBBR out there its what drives the BB to come out the other end of the barrel. In a real gun its almost the same and depending on the weight it will affect how the AR will perform. Guns modify is known for constructing quality airsoft parts in the market and have been around for a while so they know how and what airsofters want in their guns. They are a Hong Kong based company and you can be rest assured