Home / Accessory-Barrels / Diamondback Firearms BBL AR-15 300BLK 10″ PIST You cannot add "Heckler and Koch (HK USA) BARREL P30 9MM THREADED" to the cart because the product is out of stock. Sale! Diamondback Firearms BBL AR-15 300BLK 10″ PIST$8800 Original price was: $8800.$8594Current price is: $8594. Out of stock SKU: 300P10H50B8-R Category: Accessory-Barrels Product ID: 39821 Description Description Pistol-Length Gas SystemHeavy Contour Related products Sale! Shadow Systems G19 G3 9MM SLIDE ASSEMBLY OR $46900 Original price was: $46900.$37233Current price is: $37233. Sale! Beretta BARREL 92FS 9MM BLK THD $27900 Original price was: $27900.$21657Current price is: $21657. Sale! FN BARREL AR-15 5.56MM 14.5″ $39900 Original price was: $39900.$35395Current price is: $35395. Sale! CANIK BARREL TP9 SF 9MM GLD TB $19999 Original price was: $19999.$16517Current price is: $16517.