JP Enterprises Jam Nut - 1/2X28 - Matte Black

Manufactured by JP Enterprises
SKU: JPJN.12B.750
MPN: JPJN.12B.750
Manufactured by JP Enterprises
3 Reviews

Out of Stock



High quality hex-pattern Jam Nut for fast and easy installation of non-supressor mount muzzle brakes and flash hiders!
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BrandJP Enterprises
FinishManganese Phosphate
Manufacturer.JP Enterprises
Suppressor MountNon-Mount
Thread Pattern1/2 X 28
TypeJam Nut

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

3 reviews

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JP Enterprises Jam Nut


Great product...perfect for indexing muzzle brakes. Set it up once, and forget it. Saves time and frustration.

Makes clocking a brake a breeze


Worked great with my fortis red

Love this Jam Nut.

by -

So much easier than a crush washer. The design is really nice also and doesn't look stupid if the jam nut's flat sides don't line up like other ones on the market that only have 2 flat sides. Decided not to use any loctite on this as I planned to test out some other devices. However even without any loctite it still hasn't moved after several hundred rounds. Easy on and easy off, simple to tune device. Great service from PA, but I am sure everyone knows they are one of the best companies to do business with! Always my first stop when shopping for parts.