HomeGun PartsAR15 PartsAR15 UppersHECKLER AND KOCH (HK USA) MR556A4 UPPER KIT 5.56MM 11″HECKLER AND KOCH (HK USA) MR556A4 UPPER KIT 5.56MM 11″$2,179.00 HECKLER AND KOCH (HK USA) MR556A4 UPPER KIT 5.56MM 11″ 10 in stock HECKLER AND KOCH (HK USA) MR556A4 UPPER KIT 5.56MM 11" quantity Buy now Add to WishlistRemove from Wishlist Add to Wishlist SKU: LIP|HK51000385 Category: AR15 Uppers Product ID: 101427 Related products Add to WishlistRemove from Wishlist Add to Wishlist LBE UPPER W/FRWRD ASSIST AND EJECTIO $116.67 Buy now Add to WishlistRemove from Wishlist Add to Wishlist SANTAN STT-15 PILLAR UPPER RECEIVER $206.50 Buy now Add to WishlistRemove from Wishlist Add to Wishlist FORTIS BILLET UPPER RECEIVER $189.95 Buy now
