For sale Rifle Bolt AKSU-74 (or AKS-74UN) with Recoil Shock System

This is a rare Bolt AKSU-74 (or more accurately AKS-74UN) fitted with their proprietary BRSS or Bolt Recoil Shock System which uses a reciprocating weight to increase the recoil force felt by the user. The gun is in factory new condition with all accessories including factory sealed plum colour magazine, instructions, test certificate, sticker, dessicant and sew on patch. This gun is accurately called an AKS-74UN because its defining feature is a built-in Warsaw Pact dovetail rail mount (the 'N' stands for Nochnoy or "Night") used to attach night vision and other optics. The instructions include a very detailed strip down guide. The gun itself is a faithful all-steel copy with wood foregrip, folding stock and uses a Specna 7.4V or 11.1V LiPo battery. I have test fired it with a 7.4V battery and it works just fine. I have repaired a small tear in the inner box under the gun with red sticky tape. My asking price includes postage to any mainland UK address.