The Strike Industries Barrel Thread Protector (brand part no. BCTPBLU) is a machined aluminum cap that threads onto a bare AR-platform barrel to protect the crown and threads when you’re not running a muzzle device. Sized 1/2 in.-28 tpi for .223 Rem/5.56x45mm NATO barrels, it keeps grit and dings off exposed threads that would otherwise be vulnerable during storage or transport. Beyond straight protection, it adds a degree of customization to the muzzle end of your rifle, finished here in blue anodizing for a splash of color against a black or FDE build. It’s a small, inexpensive piece of insurance for a part of the barrel that’s easy to damage and expensive to fix.

Key Specifications

• Machined from 6061 T6 aluminum.
• Protects the barrel crown and threads when no muzzle device is installed.
• Adds a customization and aesthetic option for the muzzle.
• Threaded 1/2 in.-28 tpi.
• Sized for .223 Rem/5.56x45mm NATO AR-platform barrels.
• Finished in blue anodizing.
• Features a faceted profile for easier hand installation and removal.
• Rated for live-fire use, so it can stay on the barrel while shooting.
• Bore measures approximately 11mm inner diameter to clear a .223/5.56 bore.

Frequently Asked Questions

What thread does this fit? A 1/2 in.-28 tpi thread, standard for .223/5.56 AR-platform barrels.

Why use a thread protector? It protects the barrel crown and exposed threads from dings and grit when you’re not running a muzzle device.

Buy the Strike Industries Barrel Thread Protector

Add a splash of color and protect your crown and threads with the Strike Industries Barrel Thread Protector in blue anodizing. Order it from our Lubbock, Texas gun shop, and browse more gun parts and accessories from the full Strike Industries lineup we carry.