posted an update in the OP after most recent test fire seems to be working good at .095 (1/64th over the staring point of.080) magazine really seem to be the big issue now had 2 failures to feed with ASC mags , bullet tips were hitting the trunion am tring an old school crappy steel mag I got years ago from "what a country" that I modded to use an AK follower and floorplate seems to present round a little higher, more in line with the bore , still very happy with the results !
I am absolutely excited to hear that people are trying the 7.62x39 conversion without waiting for bushmaster. I want to design an AK mag lower and have it rapid prototyped. Would that help with some of the conversion stuff that people are doing?
Not really, it would add to the confusion. First you need to tune the gas ports for the ACR piton system. Then if you shorten it test it out again and tune further. once you got the beer math on ports figured out, reliable feeding. what mags do and don't work with the current, production mag well. Once all those are figured out, try the new lower. Rinse, lather, repeat for new lower.
For now, I'm good with trying to make the 7.62X39 work with the lower we already have. Just waiting on a barrel to get started on mine. If Freedom Group would release an AK lower, later on, it would have to be with a complete 7.62X39 caliber conversion kit. I'd probably spring for that complete kit, since all the parts would all be designed to work together. The barrel would probably be melonite coated as well.
All my barrels are going to be 16". I had hoped to get one of the melonite Scout profile barrels from AR15 Performance to match my 6.8 Scout barrel. Apparently, they aren't coming and ARP has removed all reference of the 7.62X39 from their website.
April 15th UPDATE : wolf and tula were giving me feed issues(hollow point especially) so I opened my feed ramp as per what Bushmaster is currently doing on its AR carbine platform , it helped , but not a cure-all it has been suggested to me by a gunsmith I trust that 20 thousands could easily be added to the top surface of the magizine catch area so as to make the round stack sit higher , better aligning the top round to the chamber , I am considering this but will hold off til I can aquire a 2nd catch (really I just want an AK lower!!) ......time at least for now to move on to the next caliber 264 LBC ! - brainstorming on 22 L.R. but thats another thread !!
I called and talked to them directly. It is a stainless mid length gas 16" barrel. If it isn't listed, ask, tell them you heard about them from the ACR forum, may be able to give you a discount. I talked my barrel down from one price to a significantly lower price, but I informed them it war for a platform they hadn't been thinking about.
I've tried everywhere. Nobody has what I'm looking for. ARP had a mid-length melonite Scout profile that I was really interested in. They apparently can't get them anymore and have removed all reference to them on their website now. Wish that I could find a good barrel. Called Ballistic Advantage last week. They only had one 7.62X39 barrel left and it was just phosphate finished.
One day, when the ACR has as many accessories as the AR15, we will all look back at this and laugh at how ridiculous this is...
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