GHK - Ver 2 Enhancing Steel Bolt Carrier and Bolt Catch Upgrade Kit for GHK M4 GBB Rifle Module and takes both green gas

and takes both green gas and co2 shells (two types of shells available separately) to accommodate whichever power source that is more readily available at one's country

(Please noted it is come with Black Color Polymer Magazine)

The new ACP601 Facelift will totally replace the existing ACP601 and we believe it will sooner dominate the market in 2015

Package includes the following:

Length      90

GHK - Ver 2 Enhancing Steel Bolt Carrier and Bolt Catch Upgrade Kit for GHK M4 GBB Rifle Module and takes both green gasThe GHK Ver2 Enhancing Full Steel Bolt Carrier and Bolt Catch Upgrade Kit for Any GHK M4 GBB Rilfe, Easy to Upgrade your GHK M4 GBB Ver 1. Material: Steel Package Included: GHK M4 Ver. 2 Steel Bolt Carrier, Ver. 2 Bolt Catch Set