Sig Sauer Taper Cap 5.56 1/2x28 Thread Anodized Black

The Sig Sauer Taper Cap is a 5.56 NATO barrel accessory designed to adapt the factory tapered barrel shoulder on Sig Sauer MCX and M400 rifles to a standard 90-degree shoulder. Its purpose is to let muzzle devices and suppressors thread on evenly and seat flush, reducing the inconsistency that an improperly seated device can introduce.

The cap is machined from 4140 steel with an anodized black finish and uses a 1/2x28 thread pattern, a common standard for 5.56 NATO rifles. Installation is intended to be straightforward and does not require gunsmithing. It is listed for use with Sig Sauer MCX and M400 barrels with a tapered shoulder.

• Caliber: 5.56x45mm NATO
• Thread Pitch: 1/2x28
• Material: 4140 Steel
• Finish: Anodized
• Color: Black
• Compatible With: Sig Sauer MCX / M400 tapered-shoulder barrels
• Function: Adapts tapered shoulder to 90-degree shoulder