The Geissele SD MOD1 HB 16" 5.56 DDC delivers a refined AR-15 experience built around Geissele’s Super Duty ambidextrous receiver set and heavy profile, 16-inch CHF chrome-lined barrel. Chambered in 5.56 NATO and finished in a distinctive DDC flat dark earth tone, this rifle combines durability, smooth operation, and a balanced feel for demanding shooters.

This Super Duty MOD1 configuration features a reliability enhanced bolt carrier group, HUXWRX QD 556 flash hider, SSA-E X trigger with Lightning Bow, and Geissele Ultra Duty lower parts kit, all working together for consistent performance and a clean, predictable trigger press. The Super 42 buffer spring with H2 buffer weight and collapsible B5 stock support controllable recoil and comfortable handling, making this rifle well suited for range use, training, and practical shooting. Geissele’s attention to detail and reputation for precision machining are evident throughout the build.

Key Features:

• Manufacturer: Geissele Automatics
• Model: SD MOD1 HB 16" 5.56 DDC
• Caliber: 5.56 NATO
• Action: Semi-Automatic
• Color: Flat Dark Earth (DDC)
• Barrel Length: 16" Heavy Profile, CHF Chrome Lined, 1:7 Twist
• Muzzle Device: HUXWRX QD 556 Flash Hider
• Stock Type: Collapsible B5 Stock
• Capacity: 30 Round
• Hand: Right
• Threaded Barrel: Yes