Premium .300 Blackout Complete Upper Build/ Suppressor Ready Adjustable Gas System.This upper features a pistol length gas system with adjustable gas block to allow for a wode range of easy adjustment when running suppressed.- Gen1 HADES Hybrid Stainless Steel Muzzle Device.-16" Stainless Steel Heavy Barrel M4, made from 416R Stainless Steel. Chambered in .300 Blackout Caliber, Pistol length gas system, 1:8 twist rate.Fully inspected barrel guarentee 1" MOA @ 100yards. Inspected with CMMs and Air Guages.- 7075T6 Billet Aluminum PAMAX Upper Reciever.-M16 Milspec Bolt Carrier Group- 15" Billet Aluminum Keymod Handguard.-Billet Aluminum Extended Charging Handle.- Milspec Forward Assist- .750 Adjustable Gas Block / Side Adjustment-Milspec Stainless Gas Tube-Easy Install Dust CoverEvery complete upper reciever sold is custom made and fine tuned to each caliber. Each upper is test fired prior to shipment.

.300 Blackout Suppressor Ready Complete Upper