05-22-2020, 03:22 PM
I completed this build last January, however I wasn't satisfied with the accuracy or ergonomics. So I made some changes:
The original Rainier Arms UltraMatch barrel shot OK, 1.5 MOA groups with handloads to around 2 MOA with Hornady American Gunner. Not what I expected from a barrel advertised to outshoot any similar priced barrel or money back. So I returned it to Rainier Arms and they made good on their warranty by giving me a full refund, no questions asked. I replaced it with a 12.25 inch Bartlein from Precision Firearms, my groups shrank to half the size of the original barrel.
I also replaced the SBA3 brace and receiver extension with a Phase 5 Hex-2 rifle length tube and Tailhook Mod 1 brace. I added a foam cover for a comfortable cheek weld.
I also replaced the Atibal xp8 with an Atibal xs 1-10x30. Better glass and the extra magnification is helpful for my old eyes.
I'm now so happy with this build, I had to show it off again :o
![[Image: grendel_12.jpg]](http://www.myrnalou.com/pics/grendel_12.jpg)
The original Rainier Arms UltraMatch barrel shot OK, 1.5 MOA groups with handloads to around 2 MOA with Hornady American Gunner. Not what I expected from a barrel advertised to outshoot any similar priced barrel or money back. So I returned it to Rainier Arms and they made good on their warranty by giving me a full refund, no questions asked. I replaced it with a 12.25 inch Bartlein from Precision Firearms, my groups shrank to half the size of the original barrel.
I also replaced the SBA3 brace and receiver extension with a Phase 5 Hex-2 rifle length tube and Tailhook Mod 1 brace. I added a foam cover for a comfortable cheek weld.
I also replaced the Atibal xp8 with an Atibal xs 1-10x30. Better glass and the extra magnification is helpful for my old eyes.
I'm now so happy with this build, I had to show it off again :o