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DELTAC Muzzle Jam Nut
As Low As $12.50 Save Up to 40%
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Most Helpful Positive Review Great AK Jam Nut
A lot of the time you wouldn’t need a jam nut while installing a muzzle device on an AK build. However, if you’re working on a build where the front sight is shifted back onto the gas block instead of at the end of the barrel, then this jam nut is great. I ordered the 14x1 LH jam nut, and I haven’t had any movement of the muzzle device it’s snugged up against. On thing I want to mention is that the photo here looks lighter than the color of the nut I received. I went off the description and was happy to see it is has a nice dark finish that blends in well with my muzzle device and barrel.
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muzzle jam nut

by dev, Verified Owner from OH, United States Written on April 4, 2025
Works perfect for what I needed will need two wrench’s to instal
Would recommend: Yes
Was it helpful to you? Yes | No

Goodbye, crush washers and shims

by Chuck, Verified Owner from PA, United States Written on October 10, 2023
Jam nuts are the best things ever for installing and timing your muzzle devices. You just thread on a jam nut all the way to the shoulder. Then you thread your muzzle device on (and time it if necessary). Then you tighten the jam nut up against your muzzle device using two wrenches (one of them should be a torque wrench). That's it. Your muzzle device is mounted and timed. If the timing is off, you just have to loosen it and try again, but the jam nut is infinitely re-usable. You'll never have to deal with crush washers or shims again.

This one is is slightly thicker than others and it helped me to move my muzzle device just far enough forward that I can mount my blast cans/suppressors exactly at the end of the handguard. Before that they were inside the handguard enough to make it a pain in the butt to unlock and remove. This one was perfectly sized to work for this specific build. There are many sizes of jam nuts available, so find the sizes that work best for your build.
Pros:
  • Ease of use
  • Re-usable
Cons:
  • None
Best Used for:
  • Timing muzzle devices
  • installing muzzle devices
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Perfect fix.

by Jones, Verified Owner from NC, United States Written on October 7, 2023
Was installing a surefire muzzle device so I could run my suppressor on a PSA AK. The shims provided did not provide enough offset to time the device correctly but this jam nut filed the gap perfectly and enabled me to time the muzzle device perfectly.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

perfect fit

by Ken, Verified Owner from NJ, United States Written on August 21, 2021
I needed this for my Krebs Custom core rifle. The build quality is top notch and fits perfectly on the rifle with Spikes Tactical muzzle brake. The black color is amazing and matches the rifle perfectly.
Would recommend: Yes
Was it helpful to you? Yes | No

Works Great

by Morgan, from NM, United States Written on March 26, 2019
Needed a bit of a spacer for some long threads on an AK barrel to make the flash hider flush. This allowed me to protect and hide the threads that weren't capable of being under the flash hider. This did the trick.
Pros:
  • None
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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