Home / Services HK416 MR556 / Factory HK 416A5 Slim Line Buttstock Black You cannot add "HK 416A5 Extended Castle Nut" to the cart because the product is out of stock. Factory HK 416A5 Slim Line Buttstock Black$17900 SKU: 416A5BTSTKBLK-1 Categories: 416 417 G28 M110, Services HK416 MR556 Tags: 416, 416A5, 416A7 Product ID: 6351 Factory HK 416, 416A5, 416A7 slim line buttstock, black polymer. New HK part, still in the bag, directly from Germany. 416A5 Slim profile Black polymer New Product is out of stock Estimated Re-stock date: November 8, 2021 Notify me when this product is back. Please enter a valid email! Subscribe Description Additional information Description Factory HK 416, 416A5, 416A7 slim line buttstock, black polymer. New HK part, still in the bag, directly from Germany. 416A5 Slim profile Black polymer New Additional information Weight 8 oz Dimensions 7 × 5 × 1.5 in 922r Qualifying Part YES – Foreign Manufacturer HK Related products Out of stock Sale! HK 416 Factory Full Auto Complete Bolt Group New $1,69900 $1,49900 Out of stock Tan Polymer HK Vertical Grip 416A5 G28 MLI RAL8000 $4900 Out of stock Tan Polymer HK Rail Covers G28 416A5 RAL8000 $4900 Out of stock HK 416 Gas Block For 10.5in Barrel Vented German from: $29900