[ARCHIVED THREAD] - PRI flip up users

Posted: 5/29/2006 12:28:26 PM EDT

I am interested in one of these gasblock/front BUIS combos. If the barrel used is not drilled for a front sight, how good are these flip up sights? They seem like they would/could shift along the bore axis, but i am assuming it doesn't happen. What is the installation/securing procedure?

ETA: I started looking at the YHM versions as well. These are 1/2 the price, are they 1/2 the quality? I notice that their attachment method is different as well.

YHMs here

Posted: 5/29/2006 12:36:11 PM EDT

[#1]

I don't have mine mounted yet, but here's some info anyway:

Std. Front Sight Base w/Pins: 4.7 oz.

front flip-up sight/gas block weights:
----------------------

YHM 5.445 oz.

PRI 4.655 oz.

Posted: 5/29/2006 1:01:16 PM EDT

[#2]

Get the cross bolt version instead of the set screw model. Use some loctite on the screws when you install it. I doubt you will have any issues what so ever. Pinned is stronger, but screws shoudnt give you trouble if you install them correctly.

Posted: 5/30/2006 11:23:22 PM EDT

[#3]

Quoted:

ETA: I started looking at the YHM versions as well. These are 1/2 the price, are they 1/2 the quality? I notice that their attachment method is different as well.

YHMs here

Yes, here as elsewhere, one gets what he pays for. I have owned both and there is about $90 difference between the two. I don't even own the YHM any longer.

Posted: 5/31/2006 3:55:47 AM EDT

[#4]

i have a few of the pri sights which have the cross bolt and none have had any problems with shifting. loc tite holds it in place just fine.

[ARCHIVED THREAD] - PRI flip up users

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[ARCHIVED THREAD] - PRI flip up users

[ARCHIVED THREAD] - PRI flip up users