Originally Posted by carnestopher
I have seen great reviews on the Adams Arms upper. Anyone have an opinion on them?
I just bought one used but in great condition.
Paid MSRP for it.
I feel strongly that the Adams Arm supper is a better choice for this dirty ammo with hard bimetal bullets compared to the Smith.
The Smith has 4140 barrel and was chromed barrel and chamber.
But I am really liking that the AA upper has the BCG and bolt melonited as well AND it uses 4150 steel for the (melonited) barrel.
Put it on a spare lower I had lying around and mounted an ancient EOtech (build year 2k or 2k2 I forgot) on it.
have not shot it yet since i just had eye surgery and am not supposed to shoot for another 2 weeks.
5.45mm Ammo can still be had for around 18 cents a round so I got 2 cases.
I still consider my other guns to be more premium and the AA upper doesnt feel as quality as a SR556 or SIg 516 upper of course but its also surprisingly light.
And the piston components are melonited as well.
I have not added an upgraded hammer spring to the lower yet.
Dont know for sure if its necessary for sure but would prefer to add it before i go shooting..
Reason is I dont want to drive 2.5 hrs ot our "range" and then find out my stock hammer spring in the lower is too weak to reliably ignite the surplus primers
Anyone have a link to an in-stock source for the upgraded hammer spring??