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Why customers choose this item
✓16 inch barrel length
✓5.56 NATO chambering
✓1 in 7 twist rate barrel
✓15 inch M-LOK handguard
✓Includes bolt carrier group
✓Includes charging handle
Product highlights
Complete AR-15 upper receiver chambered in 5.56 NATO for rifle builds
16 inch cold hammer forged barrel with 1 to 7 twist rate
15 inch SMR MK16 M-LOK free float handguard for accessory mounting flexibility
Includes Geissele Airborne charging handle for consistent manual cycling control
Nanoweapon coated bolt carrier group increases durability and corrosion resistance
Anodized black finish with HUXWRX flash hider QD 556 muzzle device installed
Product description
The Geissele Automatics Super Duty MOD1 Complete Upper Receiver is a complete upper receiver designed for AR-15 platform rifle assembly and operation.
This complete upper receiver is chambered in 5.56 NATO and uses a 16 inch cold hammer forged barrel with a 1:7 twist rate. It features a 15 inch SMR MK16 M-LOK free float handguard and includes a Geissele Airborne charging handle and a Nanoweapon reliability enhanced bolt carrier group. The anodized black finish defines the exterior surface. This model fits AR-15 pattern lowers and is categorized as a complete upper receiver assembly. In practical use, it installs directly onto compatible lower receivers for range use. The Geissele Automatics Super Duty MOD1 Complete Upper Receiver includes a HUXWRX Flash Hider-QD 556 muzzle device and maintains a fixed barrel configuration.
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Volume pricing, dedicated account management, ACH payment options, and special sourcing for businesses, agencies, law enforcement, and first responders.