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Posted: 9/20/2008 5:42:56 AM EDT
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I mulled around buying one of these for a bit because I found that when people handled my rifles they always seem to come back with the back up sights fiddled with. This sight uses simple A1 type adjustments. The sight stalk is non locking in the upright position which I actually like and has but one apeture to deal with, I like this too. Windage is accomplished with a simple A1 wheel, elevation with the front sight post. This BUIS fits tight on the rail and is secured with two Allen screws coming down from the top of the sight onto the rail. I set my sights using a 25 meter battle sight zero, we don't shoot past 300 meters and this setting drops pepper poppers reliably out that far using 62 grain ammunition. All in all I think this will be a good set-up for my three gun match rifle. http://www.fototime.com/E4685F06874800B/standard.jpg http://www.fototime.com/A9F98255A311949/standard.jpg |
Hmm . . . so how do you know the BUIS is tight enough to not go anywhere if the set screws aren't compressed tightly against the receiver? |
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Well, hmmm, let's see, I had to tap the sight into place with a rawhide hammer and after setting the lock screws I couldn't move it by tapping the front of the sight with the rawhide hammer so I am betting it is secure enough. When I removed it and reinstalled it, there was no damage to the sides or rail slot of the upper receiver. This is what I like most about the sight is that it does stay secure. Yankee Hills are one of the worst offenders for staying in place in my humble opinion. |
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$120 at the Hahn Precision store: click here Here's the product info page: click here It looks REALLY good, but until I hear more about it from others w/ first-hand experience, I'm probably just going with a Troy. |
| I'd sooner get a KAC 300M. I don't care for the A1 adjustment, though it'd be difficult to inadvertently rotate it, nor do I like the way it's attached to the receiver. If it were under $80, maybe. At its current price, it competes with well established sights without offering any tangible benefits over them. |
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If you are an FFL or American Gunsmithing Institute member, the sight costs $96.00 from Brownells. If you are FFL on file with Hahn, they cost less than that. The sight is very low profile, I have mine mounted behing a GG&G Accu-cam Pica rail and it is at the same height as the rail so it does not interfere with the objective lens of any scope. The sight stalk co-witnesses just fine with my Trijicon Reflex and ACOG. My ACOG is also mounted on a GG&G Accu-cam mount. |
How exactly do you cowitness with an ACOG, or any magnified optic? |
I wouldn't do it myself but I've seen some carbines and rifles with ACOGS that have the BUIS installed in front of the optic.  Maybe I'm missing something but how in the hell are you supposed to focus on the front sight when looking through a 4x optic?  |
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I think the idea is to move the ACOG as to the rear as possible, relocating the BUIS will yield two rail spaces, nobody's supposed to look through the ACOG to find the rear sight, the ACOG has to be removed first. But no, can't co-witness an ACOG, or magnified optic with the iron. Co-witnessing is a convenience that somehow got blown out of proportion. If my 1x red dot happens to do it, it'll save me time from having to zero it, somewhere along the line it became a must for some folks
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That might be somewhat subjective depending on whether one's primary sight is an AP, ACOG, or EOcrap. I agree that a BUIS is not a bad thing to have in any case. |
If it were $50 is might be interesting. There is no way I would buy that sight over a Troy or KAC. |
Right on. thats a good price. I am not a big Troy fan at all there CS is shit. I would go with the MI SPLP as a BUIS befor a Troy any day.. But Im liking this Hahn BUIS to.. Might be my next if Magpul keeps delaying theres.. |
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I am still a little lost as to why set screws would be a deal killer??!! I have mounted I don't know how many tritium sights to handguns that use set screws for fully lock the sight to the dovetail. What is the killer when the same system is applied to a rifle sight? Even if the sight does put a couple of dings on a rail slot so what. If you ever pull the sight and replace it, the replacem,ent BUIS is going to cover the divets anyway,,,,,,, Sometimes human logic confuses me to no end, but if you don't want to use this sight find something else. If you are interested in a simple, secure back up sight, definately consider this one. |
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Using a set screw as insurance on a sight that is already dovetailed is an entirely different matter than a BUIS that is held on by nothing other than a set screw. YMMV. ETA: I like the sight, except for the attachment method. Seems simple and rugged enough otherwise. |
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True, very true. Hadn't even considered that (set screw into soft steel, vs hard aluminum where there would be no real "bite" into the receiver.) But I still like the looks / profile. Maybe Hahn will modify the design somewhat and replace the set-screws. OR, this BUIS will grow in popularity and prove itself to be reliable. Until then, KAC 300m BUIS for me. 
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