Barrel Question for a new project ;17" rifle gas barrel
I am going to have a 20" barrel cut down to 17", probably by ADCO, and i need to be consulted on my options. I want a lighter weight barrel profile, with government being more than fine.
The barrel will be free floated under a Troy trx 15"rail and a syrac adjustable gas block will also be implemented.
Low weight and durability are my primary concerns, with accuracy following those.
Barrels i have considered so far:
BCM 20" CL'd government
BCM 18" SS SPR rifle gas
FNH 20" CHF CL'd government
Rainier Arms ultra match 18" SS rifle gas
Noveske is more than I'm willing to spend. The spr profile barrels would need to be reprofiled to reduce weight, adding cost. I do not require the accuracy of stainless, but I'm not adverse to using a high quality stainless barrel. This is going to be for a project upper that i will chronicle here on the forum. A 17" rifle gas barrel running a very light A5 buffer in my current lower.
I think i would prefer the smaller gas port of the 20" barrels, but since the syrac will allow me to adjust gas at the port, this is not critical. I'll likely use a std BCM bcg.
From my research the FNH and the BCM 20" gov profile barrel have .091" gas ports. If i had my pick, i wood prefer a gas port smaller than .100.
So, my brothers, here is where you can help: places to buy these barrels, qualities of one barrel type that make it superior to another, tips on barrel crowns/angles, hand guards, pinning vs set screw on the gas block, etc.
Most of my shooting with this upper will be with an aimpoint, offhand. My goal is ultimate smoothness in a combat carbine upper. Think uses such as run-n-gun, three gun, CQB, etc. I want a handy setup.
I am soliciting any and all advice that helps me achieve my stated goals. Anybody who attempts to tell me that the setup will not function, please don't waste your time posting in my thread....because you can kiss my ass. 
Wes at MSTN had verified that this general setup works.
Alright, go!
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