Experience With 9X39 In The AR Platform

[A&S Conversions]

Hey guys, I have seen a couple articles about this caliber, but not real user experience. I think that the concept is very cool. It seems that the 9X39 rounds will feed from both AR 7.62x39 standard magwell mags and AK mags. I have both the AR standard magwell mags and MGI AK magwell so I was thinking about getting a 9X39 upper. Any advice?

Scott

 

[Hey...]

Doubt anyone here has fired one personally.

 

[sniperdoc]

I am curious about the round, especially its performance from short barrels where the extra bullet weight and diameter might compensate for velocity loss

 

[amphibian]

Have you seen this thread? https://www.ar15.com/forums/AR-15/KS47-9x39-supressed-AR-build-mag-issues-continue/121-750080/?page=1

 

[OldBesty]

No experience, but have seen mentioned that typical 9mm suppressors may not have sufficient bore clearance to operate safely; the 9x39mm bullet diameter is 0.366 in.

 

[Fishman]

In the AR platform, what does 9x39 do that 338 whisper doesn't?

 

[A&S Conversions]

Have you seen this thread? https://www.ar15.com/forums/AR-15/KS47-9x39-supressed-AR-build-mag-issues-continue/121-750080/?page=1

Thank you so much for the link. That is exactly what I am looking for. Great thread about this caliber.

No experience, but have seen mentioned that typical 9mm suppressors may not have sufficient bore clearance to operate safely; the 9x39mm bullet diameter is 0.366 in.

I am thinking about adapting a can I already have. I bought two MP5-40 SD parts sets. Both kits came with a can. I don't know as I need two .40 caliber SD cans. I would think that a new mounting end cap and a modified gas block that the registered tube could thread onto might be cool. I might also need a custom stainless steel blast baffle to redirect the initial blast toward the back of the can.

In the AR platform, what does 9x39 do that 338 whisper doesn't?

I don't reload. The least expensive 338 Whisper ammo I could find was over 25.00 per box of 20. SGAmmo has a 760 round case of 9X39 subsonic for $500 plus $25.00 shipping. At just over half the money per round has appeal to me, especially since I have a DIAS. At least that is why I am interested. YMMV.

Scott

 

[OldBesty]

I am thinking about adapting a can I already have. I bought two MP5-40 SD parts sets. Both kits came with a can. I don't know as I need two .40 caliber SD cans. I would think that a new mounting end cap and a modified gas block that the registered tube could thread onto might be cool. I might also need a custom stainless steel blast baffle to redirect the initial blast toward the back of the can.

Hope to see pics if you go forward with it.