Geissele Automatics Super Duty MOD1 HBAR Complete AR-15 Upper Receiver - 5.56 - 14.5" P/W - DDC

The Geissele Automatics Super Duty MOD1 HBAR Complete AR-15 Upper Receiver in DDC pairs a 14.5" heavy-profile barrel with a pinned and welded HUXWRX Flash Hider, bringing the assembly to a legal 16" length for extended shooting sessions.

Features:

• 14.5" cold hammer forged, chrome-lined HBAR barrel, 1:7 twist
• Mid-length gas system with Geissele Super Compact Gas Block
• HUXWRX Flash Hider-QD, pinned and welded to 16" legal length
• 13.5" SMR MK16 free-float M-LOK handguard with continuous M1913 top rail
• Geissele Nanoweapon Reliability Enhanced bolt carrier group
• Geissele Airborne charging handle
• 1/2x28 threaded muzzle
• DDC anodized finish

The heavy HBAR barrel profile carries more thermal mass than a standard-contour barrel, holding accuracy steadier across extended strings of fire, and the mid-length gas system paired with a 1:7 twist keeps cycling reliable with most common 5.56 NATO defensive loads. The 13.5" MK16 handguard's multiple M-LOK rows and continuous top rail give you full-length accessory mounting.

This model wears Geissele's Desert Dirt Color (DDC) finish, which varies in shade batch to batch by design and isn't intended to color-match.

Geissele Automatics built its reputation on the Hi-Speed National Match trigger, later adopted by U.S. Special Operations for a select-fire variant, and now applies that same quality control to complete upper receivers for warfighters, competitors, and civilian shooters alike.