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Our billet uppers are CNC machined from solid billet 7075-T6 aluminum which is 70% stronger than the commonly used 6061 aluminum and finished with milspec hardcoat anodize to a surface hardness of 60 Rockwell. The precision machining on our our billets are well known in the industry and we are excited to introduce our uppers for your next rifle build.
Review by COLTON M. on 22 Feb 2021review stating Look cools but machining is subpar.
It looks awesome. However, I was actually very disappointed with the machining, as it has significant mismatched machining marks and edges. Most disappointing is the notch for the dust cover detent is machined too deep. As a result, the provided dust cover barely stays closed and is very loose/l and open around the edges. I probably should request...Read MoreRead more about It looks awesome. However, I was
a replacement but supply and demand has me stuck with it. Read LessRead less about It looks awesome. However, I was
Comments by Store Owner on Review by COLTON M. on 22 Feb 2021
Rainier Arms
03/03/21
I'm sorry to hear about the issues with the upper you received. You should have received an RMA form and return label to get that exchanged/refunded. If you haven't please reach out to me directly scott@rainierarms.com
J
Jamison S.
Verified Buyer
5.0 star rating
05/21/20
fits beautifully
Review by Jamison S. on 21 May 2020review stating fits beautifully
I bought this upper partially for the ergonomics of it. and it fits/ looks amazing with my aero precision gen 2 lower and my Guy Lee mk16 rail. It also was shipped and delivered very quickly probably due to me living 15 minutes away.
Q: Is this for an AR15 it is not specified in details
Rainier Arms
03/16/18
A: Yes, this is for the AR-15
S
Shawn C.
Verified Reviewer
01/17/18
Q: Are your uppers compatible with pistol caliber lowers such as New Frontier Armory, 80% Lowers AR9, or Quarter Circle 10?
Rainier Arms
01/17/18
A: Our uppers shouldn't have any issues with pistol caliber lowers.
T
Talkeetna T.
Verified Reviewer
05/31/17
Q: Will the Geissele rails work with this Upper? I know the Mega's don't work with Geissele's and most billet uppers don't as well.
Rainier Arms
05/31/17
A: There shouldn't be fitment issues, but if the anti-rotation tabs do cause any problems you can file off a tiny amount of the inside of the tabs and it should fix the issue.
Review by COLTON M. on 22 Feb 2021review stating Look cools but machining is subpar.
It looks awesome. However, I was actually very disappointed with the machining, as it has significant mismatched machining marks and edges. Most disappointing is the notch for the dust cover detent is machined too deep. As a result, the provided dust cover barely stays closed and is very loose/l and open around the edges. I probably should request...Read MoreRead more about It looks awesome. However, I was
a replacement but supply and demand has me stuck with it. Read LessRead less about It looks awesome. However, I was
Comments by Store Owner on Review by COLTON M. on 22 Feb 2021
Rainier Arms
03/03/21
I'm sorry to hear about the issues with the upper you received. You should have received an RMA form and return label to get that exchanged/refunded. If you haven't please reach out to me directly scott@rainierarms.com
J
Jamison S.
Verified Buyer
5.0 star rating
05/21/20
fits beautifully
Review by Jamison S. on 21 May 2020review stating fits beautifully
I bought this upper partially for the ergonomics of it. and it fits/ looks amazing with my aero precision gen 2 lower and my Guy Lee mk16 rail. It also was shipped and delivered very quickly probably due to me living 15 minutes away.
