I have a brand NIB 762 SDN-6 that has been sitting in my safe for a few years now.  Originally I bought the can for a custom LRB M-14 that I had but I lost interest in that and sold it a couple of years ago.  Recently I have kind of got back into AK's and was thinking of trying to put the can to use but I don’t see anything on AAC's site that is a 51T mount with 14mmLH threads.

Also let me add that I was planning on having the barrels checked for concentricity before I attempt to fire even a single round.   one of the reasons I haven't used the can on any of my AR's is because I just have never gotten around to having a gunsmith or somebody that knows what he is doing check the barrels.  I don’t know if he does this kind of thing but Jim Fuller /  Rifle Dynamics shop is literally 3 blocks away from my house and there is nobody I would rather have check out my AK barrels than him.

The AK's in question are two pre ban Poly Tec's one is a spiker and the other is a NIB red side folder that I haven't got around to shooting yet.
Required pics:

I clalled aac a year ago and was told no. They said thtat rethreading was the only route.

I think their logic is that threading on AKs is so all over the place that selling an adapter or QD mount would just be asking for trouble when someone got a baffle strike.

So are there any options out there?  I don’t remember the brand but there was a company that made an adapter for M-14's.  If I remember correctly it used the castle nut to attach and in front of that it was threaded to allow you to attach your QD muzzle device.  It would be nice if somebody made something like this for AK's
Or AAC could make their muzzle devices with a cut out that would mate up with the spring loaded plunger on the end of the AK barrel.  With something like this as long as you had your barrel checked for concentricity you shouldn’t have any problems with the muzzle device coming loose since it wouldn't be able to turn because of the spring loaded plunger.

Ok so I just found this

http://www.cncwarrior.com/M14x1-LH-to-1-2-28-RH-Muzzle-Thread-Adapter-p/24929.htm

http://www.knsprecisioninc.com/silenceraccessories/5-8x24-to-m14x1-0-lh.html

https://www.dskarmory.com/home/5-muzzle-thread-adapters.html#/thread_to-1_2_28/thread_from-m14x1_lh


Anybody got any experience with any of these?
Like I said before as long as you have the gun checked for concentricity I fail to see how adding an adapter could cause a problem?

I have see this question asked before. AAC replied that they make a 51t mount with 1/2x28 threads and the 30 cal bore diameter. This way the barrel would have to be re machined reducing the risk of a barrel strikes with factory threads as stated above. I would attempt to contact AAC and see if they still make or have plans to continue making it once all moved to their new factory.

I googled it after I typed my reply.

http://www.aacblog.com/putting-a-silencer-on-an-ak-type-rifle/

In stock....  http://www.midwayusa.com/product/638095/advanced-armament-co-aac-blackout-flash-hider-51-tooth-ratchet-suppressor-mount-762mm-1-2-28-thread-steel-matte

Take this over to your Neighbors RD

Thanks for posting that.

My only concern with this method is I don’t really want to rethread these guns.  Being that they are pre ban Poly Tech's and sort of a collector's item I don’t really want to go and modify them.  That would be like finding an all original 63 Vette and replacing the motor with an LS1 or something.


Can anybody vouch for any of these thread adapters?  If not it might be better to just forget the whole idea buy a modern AK and have that one rethreaded.  Which is way too much hassle?  Well I guess my plans of using this silencer anytime soon have been moved to the back burner once again.  I think I'll just enjoy shooting these AK's with earmuffs until I get sick of them and the next thing comes along that sparks my interest.

Go talk to RD and see what they say. Can the 1/2x28 threads of that mount be cut out and re-threaded to your threads and confirmd everything lines up??????

That’s a good idea I never thought of rethreading the muzzle device.

I have a few of the CNCwarrior adapter and they do work but I like one I bought on Ebay better because it doesn’t add any
length to the barrel like the CNC adapter.  It's been my experience that suppressed ak47 suck.  LOL
They are way louder than a AR15 but with more gas in the face.  
I've experienced the same thing with VZ58s

You have a link to the adapter you bought off Ebay?
Maybe a pic with it installed?

I am in the same situation as the OP.
1) I have an AK, and I know for a fact the threades are concentric to the bore. w00t!
2) I also have a SDN-6.

I looked at the CNC adapter, but I really don't want to add any length to the barrel.

I'm still trying to figure out how the OP has not only a suppressor BUT 2 POLYTEC'S sitting there unfired???

Personally i'd consider selling the poly's for major $$ then having a GM, or other US made bbl, installed on a low budget AK.

Those polytec's will bring major cash flow from a buyer in some ban states. Not to mention the serious AK collector.  Cutting / rethreading them gives you nothing but another AK. You might as well be threading a BL-92 in .357, another fairly unobtainium rifle. YMMV

Regarding AR bbls. One would be hard to find a name brand bbl NOT concentric with the threads.

Only the red side folder is unfired.  I have had the spiker since the late 90's but still less than 2k rds thru it since I've had it.

I've thought about dumping both of the Poly's buying a Rifle Dynamics AK and pocketing the extra $$$ but I took out the spiker a couple of weeks ago and had more fun with it than I can remember in the last several years with a rifle.

I've altered a few AK's, none with the market value those have. I'm tempted to dig out my Milled, fixed stock Poly (with box) and market it. BUT............ It's not like one can walk in to a LGS and pay $275 for them, Anymore.


With all due respect, RD is smoking crack.

Keep the spiker sell the other one. Buy a cheap / lower end unit, OR build one off a Nodak receiver. Use one of the Good US bbl makers  get the bbl cut & standard thread pattern, down to 16"
http://www.gmriflebarrel.com/ak47-rpk-gm-light-weight-machine-gun-barrel/
.
After browsing the listings for "AK parts kits" I'd go with one built and bbl swap. Yes there are little if any "quality" AK kits remaining. NO i will not pay $4-600 for one minus receiver & U.S. 922 parts.

I bought my 762SD as a "do it all" can - including my AKs.

After some years with it, I understand AAC's reasons for not making AK adapters.  They would be setting themselves up for tons of warranty work and baffle strikes if they did.  

Besides, AKs don't supress well to begin with.

EDIT:  I just copied this post direct from the reply by Dr. Dater, MD, in the thread on Tavors and Augs (both use VENTED piston systems like the AK-47 does):

"Both are piston guns which vent gases from the gas port directly into the atmosphere at the gas block. Both will be between 5 and 10 dB louder (both at the reference location and shooter's left ear) than the same suppressor on the same barrel length using a direct impingement gas system or bolt action."


And since being bought by Remington, there are plenty of Remington products to fit AAC supressors.  Why make mounts for the competition?  

My solution is to not supress my AKs, and I bought a dedicated can for 22 lr instead of lead-ing up my 762.

. Both x39 AK's sound like a 22 mag with my BYO 30 cal carbon steel can.  Considering i spent $143 for the build parts, i'm very happy with the results.
My 106 with HALO sounds quieter than my AR's. BUT. i'll not stand in the way of other people's beliefs.