Home / Accessory-Barrels / Heckler and Koch (HK USA) THREAD CAP MARK 23 View cart “SilencerCo BARREL GLOCK 23 40S&W 9/16X24” 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! Shadow Systems BARREL 9MM FS BLK FLT $21100 Original price was: $21100.$17348Current price is: $17348. Sale! FN BARREL AR-15 5.56MM 14.5″ $39900 Original price was: $39900.$35395Current price is: $35395. Sale! CANIK BARREL TP9 SF 9MM BLK TB $9599 Original price was: $9599.$8299Current price is: $8299. Sale! Heckler and Koch (HK USA) BARREL VP9 TACT 9MM 4.45″ THRD $27699 Original price was: $27699.$24669Current price is: $24669.