SLR Rifleworks .750" Dimpling Jig

Manufactured by SLR Rifleworks
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NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.


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The SLR Rifleworks dimpling jig is designed for barrels with a .750” gas block diameter and allows you to dimple the bottom of your barrel for use with set screw gas blocks. This allows for a more solid fit between your gas block and barrel and ensures that it won’t move around if it loosens. The Jig has five spacing blocks to accommodate the different set screw placement of SLR gas blocks. A 5/32” drill bit is required, and the five flats help to keep your barrel secure in the vice, so it doesn’t move around while drilling the dimples.

  • Designed for .750” barrels
  • 5 spacing for blocks with .400" .425" .450" .470" and .500" center to center
  • 5 position flats for Vice mounted drilling to keep barrel stable
  • 5/32" drill bit required
  • Made from 7075-T6 aluminum
  • Includes jig, hardened centering screw, and custom hardened drill bushing

  • Numbers on Jig face the front (towards muzzle) 
  • Spacing to be used goes on DIMPLE side with drill bushing (opposite gas port)
  • If using one dimple only, always dimple under gas port

SLR Rifleworks is a firearms manufacturer based in central Florida that specializes in bringing new, innovative parts to the AR-15 platform. SLR has even expanded into the AK-47 and Glock platforms with various components like stocks, muzzle devices, and magazine wells.


BrandSLR Rifleworks

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

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The best dimpling jig for the money!

by -

An absolute must for not only gunsmiths but those that love to build ARs! It's the easiest way to add dimples to your barrel for the addition of many gas blocks. Easily the best tool I've got from Primary Arms and it's the lowest price out there for dimpling jigs. It's easy to use and it's a solid piece of kit!