MPN: DJ6 / DJ7


  • 5 spacing for gas block with .400" .425" .450" .470" and .500" center to center screws
  • 5 position flats for Vice mounted drilling to keep barrel stable
  • For .750" and .625" barrels
  • Use 5/32" drill bit


  • Material: 7075-T6 Billet Aluminum
  • Finish: Anodized


  • 1x Dimpling Jig
  • 1x Hardened Centering Screw
  • 1x Custom Hardened Drill Bushing


If you want a secure gas block mount that you can count on, you want to equip a set screw mounted gas block. Unfortunately, not every manufacturer pre-dimples every barrel and we all know you’re not installing a set screw mount without those dimples. Fortunately, SLR Rifleworks offers a product that makes it easy for us to dimple our own barrels without worrying about screwing up and expensive barrel. The SLR Rifleworks AR Gas Block Dimple Jig is an easy to use gas block jig that will make short work of readying your barrel for the gas block of your choice.

.750 and .625 Diameter Gas Block Dimple Jig for AR Barrels

When you’re ready to dimple your own AR barrel, simply choose the correct size gas block dimple jig for your barrel and get to work. Choose the correct dimple spacing for your chosen gas block. This barrel dimple jig offers 5 options in one tool: .400”, .425”, .450”, .470” and .500” spacing. You’ll mount the jig to your barrel using the jig’s centering screw to secure it to the barrel’s gas port. Once the gas block jig is securely mounted to your barrel, clamp it in your bench vice and apply the hardened drill bushing to one of the guide holes in the top of the jig. Five position flats help you to secure the jig and barrel while you work and the bushing will guide your drill making dimpling a simple procedure. If you’ve got a feel for it already you may only drill each spot once. If you’re not quite that confident a light touch and alternating between pilot holes may make you more comfortable as you seek the correct depth for your dimples.

Wing Tactical Knows You Want It Done Right

And you want to do it yourself. Firearms are all about precision, good enough isn’t all it’s cracked up to be. When you need to prep your barrel for a set-screw gas block, choose an SLR Rifleworks Gas Block Dimpling Jig from Wing Tactical and give yourself an edge.

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