BBF Airsoft M4 Upper Receiver Shim Kit For Tokyo Marui MWS GBB Airsoft Rifle Net-Weight-(g)_362 Essential part for your Airsoft

Essential part for your Airsoft Rifle to adapt a 14mm CCW accessories (such as barrel extension

20mm Rail on Top & Bottom

-There are also 3 holes for sling point mounts as well

Realistic blowback action to simulate recoil

500D Nylon Fabric Construction

BBF Airsoft M4 Upper Receiver Shim Kit For Tokyo Marui MWS GBB Airsoft Rifle Net-Weight-(g)_362 Essential part for your AirsoftBBF Airsoft AM4 Upper Receiver Shim Kit For Marui MWS GBB Airsoft Rifle Metal Construction Airsoft Upper Receiver Shim Kit A receiver shim kit is a set of shims that are used to adjust the fit of a your Airsoft Gun receiver to the stock or the barrel Various thicknesses to allow for precise adjustments The receiver shim kit is often used to correct misalignment between the receiver and the stock, or to improve the overall fit of the firearm for better