Home / Accessory-Barrels / Heckler and Koch (HK USA) THREAD CAP MARK 23 View cart “Springfield Armory XDM 9MM 4.5″ THREADED BARREL” has been added to your cart. Heckler and Koch (HK USA) THREAD CAP MARK 23$3099 Only 1 left 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! Beretta BARREL 92FS 9MM BLK THD $27900 Original price was: $27900.$19247Current price is: $19247. Sale! FN BBL AR-15 5.56MM 14.7″ M4 CAR $29900 Original price was: $29900.$27441Current price is: $27441. Sale! CANIK BARREL TP9 ELITE 9MM BLK TB $8299 Original price was: $8299.$7341Current price is: $7341. Sale! Shadow Systems BARREL 9MM CPT BRZ FLT TB $23400 Original price was: $23400.$19156Current price is: $19156.