Selling my GHK MK18 Comes with 6 mags Low Flow Valve installed TNT Barrel Installed Quad rail with Fixed front sight post and suppressor cut muzzle Installed Universal QD sling mount Installed Daniel DEFENSE MK18 Rail, NO BARREL NUT Sling mount for Handguards NPAS Some magazines leak, I haven't had the time to fix the O-Rings. External integrity of each mag is good with the normal wear spots. The MK18 works, there's scratches on the receiver due to wear I mainly used this for backyard shooting and only fielded it 2 times. All mags are green gas Price negotiatiable, no trades