Geissele Automatics Super Duty MOD1 5.56 NATO Complete AR-15 Upper Receiver - 13.9" Pinned

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The Geissele Super Duty MOD1 5.56 NATO Complete Upper Receiver is a high-performance upper receiver for the AR-15 platform. It features a 13.9-inch chrome-lined barrel with a 1-7 twist rate, a 15-inch Super Modular MK16 Rail, and a Geissele Reliability Enhanced Bolt Carrier Group with a Stressproof bolt.

The 5.56 NATO barrel is made from high-quality steel and is cold hammer forged for superior accuracy and durability. The chrome lining makes it corrosion-resistant and easy to clean. The 12.9-inch Super Modular MK16 Rail provides a lightweight and versatile rail system that offers plenty of space for mounting sights, lasers, and other accessories. The handguard is designed with a center aligning tab that prevents the rail from rotating.

Features:

  • Chambered in 5.56 NATO

  • 13.9” CHF barrel with Geissele Profile, 1:7 twist

  • Chrome lined

  • Mid-length gas system

  • Super compact gas block

  • HUXWRX Flash Hider-QD 556 Pinned and welded

  • 12.9” SMR MK16 handguard

  • Super Duty upper receiver with cam pin cutout

  • Airborne charging handle

  • Nanoweapon Reliability Enhanced BCG

  • Geissele Stressproof Bolt with Asymmetric Cam Pin

  • Overall length: 23 1/4”

  • Weight: 4 lbs. 3 oz

Color:

The Geissele Super Duty MOD1 5.56 NATO Complete Upper Receiver is a high-performance upper receiver for the AR-15 platform. It features a 13.9-inch chrome-lined barrel with a 1-7 twist rate, a 15-inch Super Modular MK16 Rail, and a Geissele Reliability Enhanced Bolt Carrier Group with a Stressproof bolt.

The 5.56 NATO barrel is made from high-quality steel and is cold hammer forged for superior accuracy and durability. The chrome lining makes it corrosion-resistant and easy to clean. The 12.9-inch Super Modular MK16 Rail provides a lightweight and versatile rail system that offers plenty of space for mounting sights, lasers, and other accessories. The handguard is designed with a center aligning tab that prevents the rail from rotating.

Features:

  • Chambered in 5.56 NATO

  • 13.9” CHF barrel with Geissele Profile, 1:7 twist

  • Chrome lined

  • Mid-length gas system

  • Super compact gas block

  • HUXWRX Flash Hider-QD 556 Pinned and welded

  • 12.9” SMR MK16 handguard

  • Super Duty upper receiver with cam pin cutout

  • Airborne charging handle

  • Nanoweapon Reliability Enhanced BCG

  • Geissele Stressproof Bolt with Asymmetric Cam Pin

  • Overall length: 23 1/4”

  • Weight: 4 lbs. 3 oz