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CMMG manufactures high quality parts and accessories for the AR-15 platform. This particular item is a replacement front sight assembly with gas block assembly. The front sight tower is designed to fit barrels that are .750" diameter with a gas journal approximately 2" long. This assembly requires pinning onto your barrel and the pins are sold separately. This unit should be installed by a gunsmith, or a competent AR-15 specialist only.

Features and Specifications:

• Manufacturer Number: 55DA338
• Front sight/gas block assembly
• "F" Marked
• .750" Barrel diameter
• Sling loop
• Bayonet lug
• Phosphate
• Black

Fits:

• AR-15 barrels that are .750" diameter

Note: This assembly requires pinning onto your barrel and the pins are sold separately. This unit should be installed by a gunsmith, or a competent AR-15 specialist only.