Bolt Carrier Weight (Equipped with Ball Bearings) for Marui MWS (ZET) GBB /PHM-1007 PH+

For Tokyo Marui M4 MWS GBB series. For Tokyo Marui MTR-16 GBB series. Compatible with receiver retrofit kits for Tokyo Marui M4 MWS GBB system (may need to be adjusted depending on the actual situation). Requires DIY ability. Specifications: ● Product Brand : PH+ ● MADE IN TAIWAN ● Material : Steel, Metal ● Weight : 75g Contents: Bolt Carrier Weight x1 Features: ● Made of steel frame. ● Three sets of cushioned ball bearings stabilize the bolt carrier travail.