Cotton Arms Adjustable Gas Block - .750"

SKU: 750AJ
MPN: 750AJ
Manufactured by Cotton Arms


In Stock

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In Stock


Cotton Arms takes great pride in bringing precision to their work in an industry where fractions of a thousandth matter. They understand the precept that accuracy influences how often one can hit the target, while precision dictates how small that target may be. Expect nothing but the finest craftsmanship from Cotton Arms.

This Cotton Arms Adjustable Gas Block is precision machined for AR-15/M4 pattern firearms. The end of the adjustment screw pocket is deliberately left unfinished on the last ½ turn. Upon adjustment, this unfinished half turn imparts a bite, eliminating the need for applying thread locker or gimmicky mechanisms.

  • Precision machined
  • 4140 chrome moly steel
  • Black oxide 5/64 Allen head set screw
  • 0.309” 3/32” Allen head adjustment screw
  • Inner diameter: 0.752”
  • Wall thickness: 0.1615”
  • Length: 1”
  • Height: 1.345”
  • Gas port diameter: 0.181”


BrandCotton Arms
MaterialSteel - 4140 Chrome Moly
Size.750 in

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