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Great jam nut to get fill in gap in barrel threads - GrovTec US Jam Nut Muzzle Devices
by
Gene,
Verified Owner
from TX, United States
Written on January 30, 2026
Gene's Review of GrovTec US Jam Nut Muzzle Devices
Yep, I’m Gene. I realized I wrote my review of the UTG grip and light combo here in error. I did also purchase this Grovtec jam nut to take care of a gap between my Griffin Armament suppressor adapter and the shoulder on my MPA Defender’s barrel. It worked great for that purpose. 1/2x28 threads are nice and clean and it fit with no issues. It is a hair over two tenths of an inch in thickness.
Would Recommend:
Yes
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