What caliber? What barrel length?
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What caliber? What barrel length?
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The applications would include 5.56 w/16" & medium gas tube and a 20" & a rifle length gas tube.
TD and PB, I appreciate your commentary about the various means to fine tune a rifle. I've read about them all but haven't thus far gone any farther than the gas block adjustment(s) and wasn't thinking about the additional fine tuning aspect.
When I first posted the question I was thinking about a 20" rifle, .223 Wilde chamber (fwiw), with a rifle length gas tube that I already have 'fairly' well tuned using a Seekins adjustable gas block, full-auto NiB BCG, standard AR-15 spring, and an H2 buffer. I have not yet really tested it on numerous loads. This block can be adjusted without removing the hand guard, but I was thinking ahead as to possible adjustment(s) needing to be made when shooting with vs without a suppressor.
I ought to clarify up front that my thoughts are/were(?) that since I only shoot one rifle at a time, there's no sense in setting up every rifle with every bell and whistle part in order to shoot it with or without a suppressor as it quickly adds up if just a few parts can be easily swapped around. A suppressor, at least for awhile, would be swapped to whatever rifle I was going to use, and each rifle would be tuned via adjustable gas blocks, Sprinco springs (white/red, blue, red?) and/or heavier buffers. If the best plan is to also equip each rifle with an adjustable gas tube, one starts to need a cheat sheet etched in the hand guards as to which rifle needs which adjustment... Thus, the thought was in place of the adjustable gas tubes is to swap the adjustable BCG along with the suppressor, and since there are four adjustment setting on the BCG it seems like a pretty easy thing to do. Supposedly this also helps cut down on gas blow-back in the face.
Or would it be better to fine tune the rifle(s) WITH a suppressor, and then make the adjustment(s) or buffer weight change(s) as needed to shoot finely tuned WITHOUT a suppressor, and use a blow-back reducing charging handle instead of the adjustable BCG?
I had forgotten about the adjustable gas tubes and agree that may be a better option than the adjustable BCG on any particular rifle so as to minimize carbon build-up in the tube. However, this carbon build-up is also why it seems like other than an initial adjustment with an adjustable gas block, which will (I assume) inevitably get carbon build-up locking the adjustment screw in place, an AGB shouldn't be counted on long term for making adjustments. Isn't the adjustable gas TUBE area also prone to carbon buildup? The gas tube basically blows itself clean when fired, so it would seem that cleaning the BCG is a lot easier option, again, assuming it also provides the benefit of reducing blow-back in the face.
My head hurts so I'll stop and proofread this tomorrow. If you see it in the meantime and my comments and questions make any sense, please reply.
Thanks.
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