Jump to content
Rimfire World Community
Visit Brownells Visit AR15 Builder Visit Visit Site Visit Ballistic Advantage Visit Aero Precision Visit Cabelas

Recommended Posts

Posted

and as imschur warned me they won't work on the CMMG Sierra upper without a front sight riser. Says not compatible with railed gas blocks on the back of the package.

The crappy Ncstar sights that these are to replace are compatible with a railed gas blocks.

I'll order the adapter block that imschur suggested because the MBUS are so much more solid and better looking than the the Ncstars.

Posted

Ordered the YMH-230 riser from Joe Bobs Outfitters on Thurs and received it today (Sat). Fast shipping.

Here's what it looks like.

Rifle is at home so mounting will have to wait.

post-17-144124374478_thumb.jpg

post-17-144124374484_thumb.jpg

Posted

Riser worked perfectly, nearly. Had to file off a couple thousandths from the bottom inside corner of the left clamping dog. Very minor indeed, I had to study it awhile just to notice it needed this.

Co-witnesses with the holosight.

post-17-144124374505_thumb.jpg

post-17-144124374512_thumb.jpg

post-17-144124374518_thumb.jpg

post-17-144124374527_thumb.jpg

  • 2 weeks later...
Posted

I think I'd move that gas block forward just a enough to get the riser fully back on the gas block.

As a side effect, this would also give you a slightly longer sight radius.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...