Geissele Super Duty MOD1 5.56 NATO 16" 1:7" CHF Chrome Lined Bbl DDC Complete Upper Receiver Group 08-548S

Geissele Super Duty MOD1 5.56 NATO 16" 1:7" CHF Chrome Lined Barrel DDC Complete Upper Receiver Group 08-548S delivers duty-grade performance for shooters who want a complete, ready-to-mount upper rather than assembling one piece by piece.

This Geissele Super Duty MOD1 16 build runs a 16" cold hammer forged barrel with a 1:7 twist, chrome-lined for extended barrel life and corrosion resistance. The barrel carries Geissele's own profile, balancing weight and strength rather than defaulting to a generic contour. A Geissele Reliability Enhanced Bolt Carrier Group, Nanoweapon-coated with a chrome-lined gas key, handles the reciprocating side of things for smooth, reliable cycling over a long service life.

This Geissele Super Duty upper receiver includes an Airborne Charging Handle for improved ergonomics under demanding conditions. The DDC anodized upper receiver pairs with a MK16 Super Modular Rail handguard, giving builders extensive M-LOK real estate for optics, lights, and other accessories.

Key Features:

• 16" cold hammer forged barrel, 1:7 twist, chrome-lined
• Geissele Profile barrel contour
• Reliability Enhanced BCG, Nanoweapon-coated, chrome-lined gas key
• Airborne Charging Handle (ACH®)
• MK16 Super Modular Rail handguard
• Desert Dirt Color anodized finish
• 5.56 NATO chambering
• Ready to mount on any mil-spec AR-15 lower

This CHF chrome-lined barrel upper hands builders a complete, duty-proven foundation without requiring a separate parts hunt for the internals.