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gas block

  1. HK416 and HK417 HQ
    I’ve searched but can’t find the answer. Someone on here MUST know. Also, what is the size of the gas port on the barrel? Do any use an AGB? I read where some rifles are being designated for DM with the old Leupold scope that was on the Mk12. I think I also read where these rifles will get...
  2. HK416 and HK417 HQ
    I’m thinking of doing an M27IAR clone. Anyone know where I can find the correct gas block and the separate bayonet lug? I see some people are using an air soft bayo lug which leads me to believe these pieces are not obtainable, but I thought I’d ask.