Geissele Automatics Super Duty Mod 1 .300 Blackout AR-15 Complete Upper Receiver 8" Black - $1199

Description

The Geissele Super Duty Mod 1 8″ .300 Blackout Complete Upper is a turnkey, hard-use upper built for compact performance and reliability. It pairs a cold-hammer-forged, chrome-lined 1:7 barrel with Geissele’s Phased Array Tri-Port gas system, tuned for a pistol-length configuration, for consistent function under demanding conditions. This upper ships complete with a Nanoweapon Reliability-Enhanced BCG (Stressproof bolt), Airborne Charging Handle, and a HUXWRX Flash Hider, QD-threaded 5/8×24, making it ready to run out of the box.
The included 7″ Super Modular Rail MK16 with center tab provides a rigid, lightweight mounting platform, and the package also includes a braided buffer spring and H1 buffer combo. Built and assembled by Geissele Automatics in Pennsylvania, this Mod 1 upper is an excellent choice for compact .300 BLK builds that require durability and repeatable performance.
Features
Complete 8″ .300 BLK upper with BCG, charging handle, and muzzle device
CHF, chrome-lined barrel with 1:7 twist
Phased Array Tri-Port gas system with pistol-length configuration
Nanoweapon Reliability Enhanced BCG with Stressproof bolt
Geissele Airborne Charging Handle included
7″ MK16 Super Modular Rail with center tab
HUXWRX Flash Hider-QD (5/8×24) included
Includes braided buffer spring + H1 buffer combo
Specifications
Caliber: .300 Blackout
Barrel Length: 8″
Barrel Profile: Medium
Barrel Finish: Mag Phosphate
Twist Rate: 1:7
Gas System: Pistol-length (custom configuration)
Handguard: 7″ Super Modular Rail MK16 (center tab)
Muzzle Device: HUXWRX Flash Hider-QD, 5/8×24
Overall Length: 17 1/8″
Weight: Approx. 3.3 lb
BCG / Charging Handle: Included
Manufacturer: Geissele Automatics (North Wales, PA, USA)
SKU: 29418