Home / Accessory-Barrels / Heckler and Koch (HK USA) THREAD CAP MARK 23 Heckler and Koch (HK USA) THREAD CAP MARK 23$3099 Only 2 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! FN BBL AR-15 5.56MM 14.7″ M16 MID $29900 Original price was: $29900.$27441Current price is: $27441. Wilson Combat BARREL GLOCK 19 9MM 4.02″ SS $19595 Sale! Springfield Armory XDM 10MM 4.5″ THREADED BARREL $15999 Original price was: $15999.$11882Current price is: $11882. Radian Weapons AFTERBURNER+RAMJET SIG P365 BK $38995