CL Project @A+Studio Novel Design Piston Head for Gun Smith Bro & Alpha Airsoft Master Piece Light Weight Blow Back Housing BBU ( GSB AM LW BBU ) Magazine Lip Realistic Function: Open-bolt system with

Realistic Function: Open-bolt system with functional bolt lock-back

AW Custom™ NE30 Recoil Guide Rod ( SV )

300 muzzle brake which quickly allow to fix the DT silencer

50AE is one of the hardest kicking airsoft pistols in the market today

Hexagon Thread Protector

CL Project @A+Studio Novel Design Piston Head for Gun Smith Bro & Alpha Airsoft Master Piece Light Weight Blow Back Housing BBU ( GSB AM LW BBU ) Magazine Lip Realistic Function: Open-bolt system withAre you having trouble with your Gunsmith Bro Airsoft Masterpieces light weight blow back housing, with the piston O ring? Does it not seal correctly? Does the O ring run out from the piston? The CL Project Design Piston Head is a novel product for you! It is not an O ring anymore; the design is just like a tire, so gas goes into the piston will balance expand, perfectly sealing your nozzle. No more headache with looking for the right size O ring for