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« on: September 18, 2017, 07:58:55 PM »
I ended up just purchasing a complete ar15 upper chambered for the 7.62/39 round. It was just to cost effective to pass up as it was only $199 for the complete upper, $24.99 for the mil spec carry handle with adjustable sights and another $63.78 for shipping from classic firearms. The brand is Bear Creek arsenal which appears to be pretty good looking and feels durable .I am very happy with my purchase. I also upgraded the trigger to a fostech gen ll trigger so all I'm waiting for is the gun show to purchase some ammo and mags. Thanks to all the 2A members who gave me advice thanks again. I will post more after going to the range. Aloha These are really nice, function tested, and ready to drop in to any AR-15 lower and start firing...
Upper is machined from 7075-T6 forgings that are hard coat anodized for wear and scratch resistance meeting MIL SPEC.
Barrels drilled, reamed and buttoned from 4140, 4150 Chrome Moly, Chrome Moly Vanadium per MIL –B-11595E or 416 stainless gun quality steel then stress relieved prior to contouring and chambering.
Twist rate is 1 in 10. The barrels are chambered in the highly desireable 7.62 X 39 Caliber
The head space is set and the barrel is tested for straightness using a 6” drop pin gage.
The steel barrel assemblies are Parkerized to eliminate rusting. Bolts machined from tool steel, hardened and tempered to provide maximum wear characteristics then Parkerized to eliminate rusting.
Bolt carriers machined from 8620 gun quality steel, heat treated and tempered to maximize strength and wear characteristics then Parkerized to eliminate rusting. These work great with our complete lowers...
The barrels on these are made from 4140 cold rolled steel and are rated at a barrel life of approximately 150,000 rounds. They are very top end.
They are not chrome lined as most AR-'s are not. Chrome lining on modern rifles is typically used where there is a high probability of corrosive ammo being used such as AK type rifles chambered for foreign calibers. Since chrome lining may slightly affect accuracy, and since most AR-15 rifles are designed with accuracy as a benchmark, and since virtually all 7.62X39 is non corrosive...most AR manufacturers do not chrome line barrels.