• ATI Outdoors AR-15 Steel Muzzle Brake Jam Nut 1/2"x28 Thread
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ATI Outdoors

ATI Outdoors AR-15 Steel Muzzle Brake Jam Nut 1/2"x28 Thread

ATI Outdoors AR-15 Steel Muzzle Brake Jam Nut 1/2"x28 Thread

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This ATI Outdoors jam nut is a precision-machined steel component made to secure muzzle devices on .223/5.56mm rifles with 1/2"x28 threading. Its heat-treated steel body and black oxide finish give it the corrosion resistance needed for reliable retention on the AR-15 platform.

CNC machining keeps the thread specification exact, so the nut seats properly and holds the muzzle device in place during use. It is a direct replacement part for .223/5.56mm rifles that use 1/2"x28 threads.

Key Features

Brand ATI Outdoors
Product Type Muzzle Brake Jam Nut
Compatibility .223/5.56mm rifles
Thread Size 1/2"x28
Material Heat treated steel
Finish Black oxide
Manufacturing CNC precision machined
Condition New
Manufacturer SKU A.5.10.2255
UPC 758152175113

How to use

Thread the jam nut onto the 1/2"x28 barrel threads, install the muzzle device, then tighten the nut against it to lock the device in place.

Frequently asked questions

What thread size does this jam nut use?

It is threaded 1/2"x28, matching standard AR-15 muzzle device threading.

What is the jam nut made of?

It is machined from heat-treated steel and finished with a black oxide coating.

Which rifles is this jam nut compatible with?

It fits .223/5.56mm caliber rifles.

What is the manufacturer SKU for this part?

The manufacturer SKU is A.5.10.2255.

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