AK Sponsor
Posted: 5/28/2010 9:35:23 AM EDT
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I have originally posted this on another forum some time ago, but thought it might be interesting for you here too. I have now some experience with the mount, and it has performed flawlessly. Sight retains zero within one MOA according to my experiences. I have been using the rifle in tactical training and 3-gun competitions. Combination is a bit on the heavy side, and looking at it now I think we could have made the material thicknesses somewhat thinner. On the other hand the design is now pretty much bomb proof. Feel free to copy the idea. :)
I had this idea of putting an ACOG on my Sako. But I didn't want to do it the normal way like the army did: http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/picmil.jpg With this solution it is impossible to aim through the iron sights without removing the ACOG and the cheek-piece. Also the system is very complicated with the picatinny adapter in between. I wanted to make something that works more like the original AR carry handle. Me and my mate started with a Belarussian AK "weaver" mount and a 20x50mm aluminium bar. http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic1.jpg http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic2.jpg We took the Belarus mount and flattened the top part which was supposed to be weaver rail. It wasn't up to any spec but it had the bottom that could be made to match the wedge on the rifle. http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic3.jpg We then proceeded to cut out places for what was left of the weaver mount and the acog itself. We decided to use screws to lock the mount pieces together. http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic4.jpg Ready for test shoot. It turned out that we got everything going pretty much as planned. http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic5.jpg http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic6.jpg We proceeded to cut out all the pieces that didn't look like a sight adapter, and lightened the mount as much as we dared. We still left it pretty much bomb-proof solid. We also added the rest of the screws and gave it coat of paint. http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic7.jpg http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic8.jpg Despite the way how the pic looks :), the irons are easily usable without removing the sight. (they are also centered in the hole in the acog) http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic9.jpg So proper test shooting could be shot. In the same time I also ran a functionality check on my new suppressor, but the main thing in the test was to check out if the mount would allow proper groups to be shot, and how the sight would remain zeroed. http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic10.jpg Rifle is well worn piece with probably several tens of thousands through the barrel so it can't do any better than what we shot anyway: Single groups with Suppressor: 200gr Lapua D166 subsonic - 1,7MOA (reloaded naturally) 123gr Barnaul FMJ - 1,8MOA http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic11.jpg Then I took of the can and ran more groups through the gun with Barnaul ammo (Barnaul is Russian cheapo brand which I normally shoot for economic reasons) and a single group with what was actually accurate ammunition by Lapua. Barnaul groups were from 1.3MOA to 2,5MOA, which I considered good enough for my purposes. Lapua group was opened up to 1,5MOA by the single "flier": http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic12.jpg Testing showed that the mount was solid and good, and that it could be removed and mounted without the need to re-zero it. So I added the final touches: http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic13.jpg http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic14.jpg http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic15.jpg http://img.photobucket.com/albums/v355/Jippo01/Guns/ACOG/pic16.jpg |
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Mount weighs 340g which would translate to 12oz if I got my calculations right. Weight of the mount isn't a problem, but I wouldn't call the combination of the M92s + ACOG + mount exactly handy in terms of weight. Combination weight is 4.7kg (over ten pounds).
Postal, you could use the side mount alone, but I'm afraid getting a cheek weld wouldn't be possible. |
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A. Your modern Valmets are so sexy. I want one SOOO bad.
B. Excellent accuracy. Far more so than any other AK pattern rifle. Wondering what you guys have changed to get that accuracy. C. 200gr. bullets in 7.62x39?! Wow! What kind of muzzle velocity are you getting. D. Cool mount! Great idea. Thinking about putting my TA31 on my SLR-106FR. If I can gain access to a machine shop, I may try something like this. |
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A. Thanks. :)
B. Gun has gone through immensive amount of ammunition (I bought it second hand 2005 and have put probably at least 15-20 thousand through it), and is certainly not anymore at it's prime. Accuracy does remain acceptable, but when it will go to 2-3 MOA I will need to replace barrel and the bolt. C. 200gr's are subsonic. So they are around 300-310m/s and pretty quiet: shooting them makes everyone smile for some reason. D. Will be waiting for the report then! :) |
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My ACOG came with the standard TA51 mount, it attache's to the 1913 rail on my UTG978 mount. Also my AIMPOINT M4 with it's standard mount will attache to the same UTG978 mount.
The UTG978 is strong and lite weight, it locks on to the AKs Russian rail tight. Cost from $25 to $39 US depending on where you find them. 
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Quoted:
My ACOG came with the standard TA51 mount, it attache's to the 1913 rail on my UTG978 mount. Also my AIMPOINT M4 with it's standard mount will attache to the same UTG978 mount. The UTG978 is strong and lite weight, it locks on to the AKs Russian rail tight. Cost from $25 to $39 US depending on where you find them.
If you look at the first pic with the guy in the uniform you will note that he has TA51 attached to an unspecified side mount. Problem with this is the unnecessary height of the optics that requires the additional cheek rest pictured on the stock. Cutting the sidemount and making custom adapter allows the ACOG to sit as low as possible¨to allow a proper cheek weld. Custom solution moved the sight down about an inch which was critical in this. There is also of screws possibly getting loose and mount retaining zero when adding mount on mount which I wanted to get rid of. |
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