Selling a discontinued rare authentic recoil shock PTS Magpul RM4 ERG in CQB form. Completely new, never fielded, literally took out of the box for the first time today to take pictures. Comes with authentic Magpul markings. Functioning Magazine cutoff, functioning bolt catch that needs to be pressed after every reload, functioning charging handle that locks back, very accurate and easy to handle. Magpul rear sight, Magpul sling loops, Magpul stock, Magpul handguard, Magpul grip, 60 round KWA ERG pmag and Magpul accessory rail come standard with this gun. Message for questions. No tr4des, paypal only, local pickup available in Mass.