Please Vote! AR upper group buy: Would you buy?
Posted: Fri Feb 18, 2011 9:16 am
This is a poll to simply gather information. There is no commitment to buy!
Upper Description
Uppers would come complete with bolt carrier and charging handle. Hopefully, you would have a choice of a slick-sided receiver or one with forward-assist and ejection port door. Handguard would be a free-float tube. Gas system would be rifle length. All barrels would be made from 416 stainless steel and muzzles would be crowned and not threaded. Barrels could possibly be manufactured by Black Hole Weaponry and would come with either their 3 or 5 land polygonal rifling. Click on the link to their site to see an illustration of this rifling.
Barrel Descriptions
Option 1 (medium/light) would be .7" under the hand guards, .750" at the gas block and .7" forward of the gas block.
Option 2 & 3 (medium/heavy) would be .825" under the hand guards, .750" at the gas block and .725" forward of the gas block.
Option 4 (heavy/varmint) would be .975" under the hand guards, .936" at the gas block and .9" forward of the gas block.
24" barrels would have a 1/11" twist while the 20" barrels would have a 1/10" twist. Would you change anything with the barrel profiles?
Note: A standard lightweight AR barrel uses a .625" gas block so the medium/light barrel would still be considerably heavier than a standard lightweight AR barrel.
Upper Description
Uppers would come complete with bolt carrier and charging handle. Hopefully, you would have a choice of a slick-sided receiver or one with forward-assist and ejection port door. Handguard would be a free-float tube. Gas system would be rifle length. All barrels would be made from 416 stainless steel and muzzles would be crowned and not threaded. Barrels could possibly be manufactured by Black Hole Weaponry and would come with either their 3 or 5 land polygonal rifling. Click on the link to their site to see an illustration of this rifling.
Barrel Descriptions
Option 1 (medium/light) would be .7" under the hand guards, .750" at the gas block and .7" forward of the gas block.
Option 2 & 3 (medium/heavy) would be .825" under the hand guards, .750" at the gas block and .725" forward of the gas block.
Option 4 (heavy/varmint) would be .975" under the hand guards, .936" at the gas block and .9" forward of the gas block.
24" barrels would have a 1/11" twist while the 20" barrels would have a 1/10" twist. Would you change anything with the barrel profiles?
Note: A standard lightweight AR barrel uses a .625" gas block so the medium/light barrel would still be considerably heavier than a standard lightweight AR barrel.