G&P Bolt Carrier Hammer Assist (Short) for Tokyo Marui M4A1 MWS GBB

The G&P bolt carrier hammer assist (short type) is a high quality part designed to work with the TM MWS M4 GBBR. This part is designed to be a lightweight and rugged upgrade part, perfect for dealing with the stresses of green gas over longer term use. Compatibility: Tokyo Marui M4 MWS GBBR Includes: x1 G&P Bolt Carrier Hammer Assist (Long) for Tokyo Marui M4A1 MWS GBB