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″ 19 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 Out of stock Add to WishlistRemove from Wishlist Add to Wishlist LUTH AR A1 ASSEMBLED UPPER RECEIVER $187.95 Read more Out of stock Add to WishlistRemove from Wishlist Add to Wishlist SANTAN STT-15 PILLAR UPPER RECEIVER $206.50 Read more Out of stock Add to WishlistRemove from Wishlist Add to Wishlist LUTH AR UPPER RCVR ASMB W/CHARG HNDL $140.95 Read more
