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Posted: 3/5/2012 4:49:08 AM EDT
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My first AR15. Going to have Alberta Tactical Rifle Supply build me a custom AT15.
Going to chamber it in .223 Wylde from a match grade blank, contour is totally custom. (so some help there too please) The idea is to have a gun that eats anything, making it's value during an ammo shortage higher in usefulness and as a commodity. (it's a "fallout" build) I want to run a 10" 1 in 9" barrel with a mid-length gas system, preferably a short stroke over a DI. ATRS makes a wicked flash hider which will be incorporated. My questions are, what would the short comings of the above system be beyond the obvious (it's not a 16"), is there a better alternative that is slightly different (i see a lot of 11.5" set ups, reason?) do I have to make any major considerations for terminal ballistics with a 10" out to 300yards say? Whats' the opinion of SS vs DI for a mid/carbine? Do I put my time in the DI zone, or is starting off with a CMMG kit a better idea? I know the guys at ATRS will have these and many other answers but I wanted to ask for some experience from this awesome community. cheers Everything else about the AR platform I get from other weapons I've owned, but the detail and complexity of selecting a gas system and barrel is totally unique in my experience. |
I'm surprised that no one else has responded to this. I'm no expert, but I believe that putting a mid length gas system on a 10" barrel would be a real problem. The gas block would be right at the muzzle which would give zero time for the gasses to get to the BCG before the bullet leaves the barrel. Even with a short-stroke piston I suspect that you'd have significant cycling problems. Here's a pic of my 16" with a midi gas system to illustrate.
My measurement of the barrel is probably off by 1/2 inch or so, but I think you'll get the point. How about it, experts? Am I way off base here? |
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http://ar15barrels.com/prod/operation.shtml
What I was able to gather is the optimal dwell time between the muzzle and gas port should be .200 ms. Hope this helps. |
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