Perfect fit!
Very much so needed for the build.
Very useful sight
I’ve built many rifle systems using this brand of sight. I am please with the ease of installation and adjustment it has. I’ll continue using these sights.
MBUS gen2
Excellent value
Solid quality
First time I purchased a polymer sight. This went on my 9mm ar9 pistol that I use just for range plinking. The polymer sight is of good quality, easy to mount, easy to adjust. The adjustment key is also polymer. BTW, a "steel" adjustment key will no work on this sight. So...don't lose the polymer key that is included. I don't know how "tough" the sight would be under a range "run 'n gun" type of shooting where the firearm would get a lot of bumping and banging against wood and\or metal objects. My guess is it would take a good beating, but again, it's polymer and not steel.
Nice Sight
Simple set up and easy to flip up or down for optics or storage. Easy to zero as well. Lightweight polymer is a plus too.
Good budget front sight
This is a great budget front sight. It is not the BEST front sight out there by any means, but it is good enough for casual shooting or a budget build.
Solid but Flawed
The MBUS are affordable, and their easy deployment is another big plus, but I haven't been thrilled with their function as field-ready iron sights. My review of the rear sight unit will address my grievances toward its oddly squared-off aperture piece, but the front sight is also a minor failure in my book. I've found that traditional "bunny ear" wings and crescent or circular shields can help to "frame" the front sight in the round aperture of a peep design, which is important when your eyes are literally trying to center a square peg (i.e., the front post) in a round hole. Unfortunately, the angular, in-swept wings of the MBUS don't help much with this, failing as they do either to match or oppose the contours of the aperture in a way that helps reference the point of aim. My ability to land consistent on-target hits noticably improved when I switched to a "bunny ear" design, so it's more than just an impression. That said, I'm sure everyone's eyes and brains will process these images differently. The bigger problem from a functional standpoint is that moderate wear on the retention plunger for the sight post (from initial zeroing, replacing the post, and rezeroing the new post) was enough to warp or weaken the spring until it no longer snapped to when the post was set, barely holding it in place. (And I did use the included plastic tool.) While it didn't quite lose function, I question its longevity in these circumstances. For all that, though, the affordability and overall quality of the piece still earn it some merit as a backup unit.
