Home / Accessory-Barrels / Diamondback Firearms BBL AR-15 300BLK 10″ PIST You cannot add "FN BBL AR-15 5.56MM 20" M16 RIFLE" 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! FN BBL AR-15 5.56MM 18″ M16 RIFLE $29900 Original price was: $29900.$27441Current price is: $27441. Sale! Shadow Systems BARREL 9MM FS BRZ FLT TB $23400 Original price was: $23400.$19156Current price is: $19156. Sale! FN BBL AR-15 5.56MM 16″ M4 CAR $29900 Original price was: $29900.$27441Current price is: $27441. Sale! Shadow Systems BARREL 9MM CPT BRZ FLT TB $23400 Original price was: $23400.$19156Current price is: $19156.