Guns Modify Aluminum 7003T6 CNC Speed Zero Bolt Carrier for Tokyo Marui M4 MWS - Red riflescope Each cycling will open &

Each cycling will open & close the bolt cover

Full Aluminum Constructed Receiver

s needs may be

Umarex (VFC) 20rd Magazine for HK417 GBB Rifle  Suitable for Umarex HK417 Series Airsoft Gas Blow Black GBB Rifle  Metal and High Density Plastic Constructed  20 Rounds Loading Capacity  Suitable for 6mm Plastic BB only

Guns Modify Aluminum 7003T6 CNC Speed Zero Bolt Carrier for Tokyo Marui M4 MWS - Red riflescope Each cycling will open &The 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