Home / Accessory-Barrels / Heckler and Koch (HK USA) THREAD CAP MARK 23 Heckler and Koch (HK USA) THREAD CAP MARK 23$3000 In stock Heckler and Koch (HK USA) THREAD CAP MARK 23 quantity Add to cart SKU: 970174 Category: Accessory-Barrels Product ID: 41553 Description Description Related products Sale! Springfield Armory XDM 10MM 4.5″ THREADED BARREL $15999 Original price was: $15999.$11881Current price is: $11881. Sale! FN BBL AR-15 5.56MM 16″ M16 MID $29900 Original price was: $29900.$27441Current price is: $27441. Sale! SilencerCo BARREL GLOCK 19 9MM 1/2X28 $16900 Original price was: $16900.$14408Current price is: $14408. Sale! CANIK BARREL TP9 ELITE 9MM BLK TB $8299 Original price was: $8299.$7341Current price is: $7341.