MPN: GB6-S / GB7-S


  • Low-profile design allow this micro gas block to fit inside most rail systems
  • Fits barrels with a .750" or .625" barrel diameter at the gas block location
  • .400" Set screw spacing
  • Gas tube roll pin included


  • Material: 4140 Billet Steel
  • Finish: Melonite QPQ Black
  • Length: 0.97"
  • Height:
    • GB6 (0.625"): 1.29"
    • GB7 (0.750"): 1.35"
  • Width:
    • GB6 (0.625"): 0.77"
    • GB7 (0.750"): 0.90"
  • Weight:
    • GB6 (0.625"): 1.69 oz.
    • GB7 (0.750"): 1.48 oz.


  • Any AR-15 and AR-10 barrel that has a .625" or .750" diameter at the gas port area.


  • 1x SLR Rifleworks Micro Steel Gas Block
  • 2x Set Screws (Set Screw Version)
  • 1x Gas Tube Roll Pin


If you’ve got a standard weight build and you’re looking for a high-quality gas block to fit under your slim handguard, Wing tactical has a great one for you. The SLR Rifleworks Micro Steel Gas Block is a steel low profile gas block that will fit under just about any handguard you’d care to equip.

Quality Steel Low Profile Gas Blocks for Every Build

Even if you haven’t chosen your handguard yet, you can confidently choose an SLR Rifleworks Micro Steel Gas Block for your next build. Each SLR Micro Steel Gas Block is precision machined from 4140 Billet Steel and given a QPQ Melonite Finish that not only protects it from corrosion and the elements but helps to keep it free of fouling. That Melonite finish gives it a deep black beauty that raw stainless blocks just can’t stand up against. The SLR Rifleworks Micro Steel Gas Block is available in .625” and .750” sizes to fit most AR platform barrels. Choose a set screw mounted model or the clamp-down style. Either way, you get a quality steel low profile gas block that makes an excellent base for your weapon’s gas system. Among the low-profile gas blocks marketed for AR builders, this one rises to the top.

Having Trouble Deciding Which Mount Style You Need?

If you’re ordering your barrel from Wing Tactical, our customer service team will be happy to help you decide which gas block is best for your application. If you’ve chosen a pre-dimpled barrel, that’ll be a set screw model. Those of you with smooth barrels can choose the clamp on version of the Steel Micro Gas Block, or you might want to drill your own dimples with the help of a dimpling jig and mount a set screw version for extra peace of mind. Either way, Wing Tactical is here to help you give yourself an edge.

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