German HK MP5 Replacement Stock Quick view HK MP5K SP5K Folding Buttstock 261249 Quick view Showing 1-2 of 2 item(s) Back to top Atlantic Firearms carry a wide range of stock sets and furniture set for AK47, AR15, AK74 and other classic firearms. From wood to polymer and everything in between we are sure to have the stock set for your prized firearm. AK47 Furniture AR15 Furniture MP5 Furniture Auction