TacFire AR-10 Low-Profile Gas Block with Picatinny Rail .936

The TacFire AR-10 Low-Profile Gas Block w/ Picatinny Rail - .936 replaces your rifle's existing A2 front sight and comes equipped with 2 Picatinny rails so you can mount your favorite weapon-mounted accessories. This low-profile gas block boasts aircraft aluminum construction with a corrosion-resistant, anodized, matte finish. The top rail is lower than the flat top by 0.28". Compatible with .308 barrels with a .936" diameter. Includes roll pin and set screws. No modification to the barrel is required.