This jam nut provides secure locking for muzzle devices on 1/2x28 threaded barrels. Constructed from black carbon steel with 0.5 inch outside diameter. The jam nut threads behind muzzle devices to prevent loosening during use. Compatible with AR-15 barrels using 1/2x28 thread pitch.
The jam nut threads onto the barrel behind the muzzle device to prevent loosening. This provides additional security beyond standard muzzle device torque. The jam nut compresses against the muzzle device shoulder to maintain position during firing cycles.
The 1/2x28 thread pitch is standard for AR-15 barrels in 223 and 5.56 calibers. The jam nut threads onto barrels with matching thread specifications. The fit allows proper positioning behind muzzle devices for effective locking.
The black carbon steel material provides durability for sustained compression loads. The construction resists wear from installation and removal cycles. The material maintains thread integrity during repeated use.
The 0.5 inch outside diameter accommodates standard AR-15 barrel profiles. This dimension allows the jam nut to sit flush against muzzle device shoulders. The diameter provides adequate wrench surface for installation torque.
Install jam nut before muzzle device installation. Torque muzzle device first, then tighten jam nut against device shoulder. Verify secure fit before use. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
Thread Pitch: 1/2x28
Color: Black
Material: Carbon Steel
Outside Diameter: 0.5" (OD)
To view the most up-to-date shipping times Click HERE. To view Warranty, Returns, Terms & Restrictions Click HERE. To view State Restrictions Click HERE.
