Geissele 08-553B Super Duty MOD1 .300 BLK 8" 1:7" CHF Chrome Lined Bbl Black Complete Upper Receiver Group

The Geissele Super Duty MOD1 .300 Blackout 8" Upper 08-553B is a premium AR-15 upper designed for compact or suppressed setups. It features an 8" cold hammer forged, chrome-lined barrel with a 1:7 twist for durability and accuracy. TheGeissele 08-553B upper includes Geissele’s enhanced bolt carrier group with a Nanoweapon-coated Carpenter 158+ bolt and a precisely tuned gas system for reliable performance.

Also included are the Airborne Charging Handle, MK16 Super Modular Rail for accessory mounting, and a HUXWRX QD flash hider compatible with FLOW suppressors. It typically retails around $1,260 and may be subject to export restrictions.