The SilencerCo Delta Thread Protector in 1/2×28 (SilencerCo part no. AC6) caps the exposed threads on a barrel or adapter whenever a suppressor or muzzle device is not mounted. It is made from stainless steel with a black oxide finish. It can serve as a replacement for the protector on an adapter you already own, and it suits a barrel threaded with SilencerCo’s O-ring engagement feature. It is a small part that keeps a threaded muzzle clean between range trips.

Key Specifications

• The thread is 1/2×28, which has to match the barrel or adapter it covers.
• Construction is stainless steel, a durable material for a part that rides on the muzzle.
• The finish is black oxide.
• It can be a replacement for the protector on an adapter you already own.
• It suits barrels cut with SilencerCo’s O-ring engagement feature.
• It is the part that protects fine threads in a case, a holster or a safe when the suppressor is off the gun.
• The 1/2×28 pitch is the one used on many 9mm and .22 LR hosts.
• SilencerCo also lists a .578×28 thread protector for larger-thread hosts.

Frequently Asked Questions

What does a thread protector do? It caps the exposed threads when a suppressor or muzzle device is not attached, which helps keep the threads clean and undamaged.

What thread does this one fit? It is the 1/2×28 version, so it threads onto a barrel or adapter cut 1/2×28.

Buy the SilencerCo Delta Thread Protector, 1/2×28

A thread protector is cheap insurance for a threaded barrel. Order it with our suppressor parts and accessories from our Lubbock, Texas gun shop for fast, insured shipping.