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by rob coop, from KY, United States Asked on August 22, 2021
Because of variances between gas blocks, there's no guarantee its going to work with all available options on the market, and unfortunately there is no comprehensive list of compatible options. The only fitment information provided for these gas tubes is the following:
PLEASE NOTE: GAS TUBE MUST BE INSTALLED IN THE GAS BLOCK PRIOR TO SEATING THE GAS BLOCK TO THE BARREL.
**EXT-gas tubes do not fit with Aero Precision Enhanced Upper Receivers (M4E1 & M5E1), or Seekins Precision SAR Handguards.
I had a little trouble with mine too. It eventually did fit up just fine with my mk12 gas block from DD