Police Trade-in Heckler & Koch MP5-40 A3 parts kit. This kit is factory German made that was de-milled and traded in from a police dept. Kits includes MP5-40 front section, rear section with rear sight, 3 or 4 position ambi trigger pack, IS date coded BCG, A3 stock, and (3) 30-round magazine. Barrel includes tri-lug and is threaded. Front section includes uncut magwell and bolt hold open which are almost imposable to find. Will not ship to banned states. Used, sold as is, not returns. All NFA rules apply, will not ship to banned states.