COMPLETE SHUTTER FOR MARUI MWS GBB HAOxUNICORN (UC-HAO-BOLT)

High smoothness CNC steel body shutter produced by HAO ind.
Ball pusher group, return springs and cage with anti-jamming system supplied by UNICORN...
The rear buffer slide and end-of-stroke dampening system have been significantly improved.
Better performance and decreased gas consumption by increasing operating precision
Only compatible with MARUI MWS / MTR gas rifles.