Sharpshooter Posted February 10, 2019 Report Share Posted February 10, 2019 I've tried to do my research, but the newest info I could locate was from Magwa's post 3 years ago. I'm putting together a "dissy" on a DPMS G2 MOE with a .750 barrel mating surface. I'll be running the MI 15" MLOK rail, and I want to use an adjustable gas block. I know I don't need to use one, but I want to. The MI rail has a 1.3" inside diameter, with a .4" gas tube channel. So far, I see the SLR Sentry 7-S set screw will fit, as will the Seekins Precision Low Profile Adjustable (thanks to info from Wash ). The SLR Sentry 7-S has a distance from bottom of the barrel to bottom of the block of .17" and the Sentry 7-C clamp on has a distance of .21" for the same measurement. Interestingly (to me, anyway) SLR recommends using the 7-C only for rails with an ID of 1.35" or larger and the 7-S for anything smaller. I'd prefer to use a clamp on block if I can so I don't have to worry about the existing A2 block pin grooves and the set screws of the new block. Also, I don't have a drill press and I'd hate to f-up the barrel with a hand drill. So, anything anyone can suggest would be welcome. Thanks! Quote Link to comment Share on other sites More sharing options...
Ravenworks Posted February 10, 2019 Report Share Posted February 10, 2019 Seekins is what I have. Personal preference, pick one and use it. Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted February 11, 2019 Report Share Posted February 11, 2019 I'm a fan of the SLR, strip the adjustment or just loose something when you clean and they will take care of you. It is very much a preference though. Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted February 11, 2019 Report Share Posted February 11, 2019 1 hour ago, jtallen83 said: I'm a fan of the SLR, strip the adjustment or just loose something when you clean and they will take care of you. It is very much a preference though. I agree with Jim, SLR is a superb choice. Quote Link to comment Share on other sites More sharing options...
mineralman55 Posted February 11, 2019 Report Share Posted February 11, 2019 SLR is a superb adjustable gas block, but if you can find one, the Syrac Gen2 is ever better. Quote Link to comment Share on other sites More sharing options...
Merle Posted February 20, 2019 Report Share Posted February 20, 2019 I have an Odin Works block and like it more than the Seekins I have on another rifle. The seekins adjustment screw doesn't have detents. Instead it uses a set screw that tightens against the adjustment screw to keep it set in place. The Odin Works adjustment screw has flats milled all the way around it that lock in place against a spring loaded detent. Theres also a stop on the adjustment screw so it cant be unscrewed completely and/or launched into the nether regions of the garage. Quote Link to comment Share on other sites More sharing options...
Sharpshooter Posted February 24, 2019 Author Report Share Posted February 24, 2019 Ended up getting the Seekins. The reviews combined with the price point sold me. Thanks for the help! Quote Link to comment Share on other sites More sharing options...
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