I need to figure out a way to block the mags to 10-rounders by July. I'd prefer to avoid anything that involves cutting or drilling of the magazine parts.
It'd be nice if 10-rounders were available. It wouldn't surprise me at all if more BM-59s (including the BM62 and BM69) exist in the U.S. than factory 10-round magazines.
I also wouldn't be surprised if the BM-59 falls victim to CA's gun banners within the next 2-4 years in any configuration.
For now, I'm trying to figure out how I want to configure this thing. I'm liking the copy of the E model compensator for standard BM-59s that Standard Parts sells. I'm thinking right now that I could do a BM-62 gas cylinder (assuming I can find one or the Standard Parts copy that they used to make) with the E-compensator and have a Garand bayonet lug attached to the bottom of the gas tube so that I could use the BM-59E bayonet (I'd like to maintain the ability to attach a bayonet). If the tube is the SP copy or a BM-69 type, I would probably not be able to use the bipod given how far back the lug would probably have to go.
The other thing I was thinking about was using a 5" tricompensator and cutting off the flash suppressor, and perhaps, if necessary, moving the bayonet lug a bit to the rear so that it is on the gas tube instead of the tricompensator (if the tube is configured for the bipod, it would be usable in such a case), or finding one that had already been so modified (I've seen rifles modified like this, although the bayonet lug was usually removed outright). I don't think I would be able to find the Indonesian sporter version, which I think is designed to be ban compliant.
Of course, finding the gas tubes without the spindle valve for grenade launching and the 5-inch tricompensators is proving difficult.
I think I'm going to try to also get a second, much nicer parts kit for a nicer built and on that one try to find and use the Para tricompensator and just leave it off while in CA, and also get a folder for that one for use out of CA. I'd go out of my way for a Beretta receiver for such a thing. For the build on my current kit, I think that I'm going to just get any USGI receiver that I can get at a decent price once I have the funds. Sounds like JRA may no longer offer receivers a la carte. I'd consider trying one out to save money on the not-so-nice build. Kinda wish I had the funds when they were doing the preorders. Then again, who knows what the quality is on those; it may have proven to be a regrettable purchase.
Another thing I'm trying to find are a couple of the Golden State style charger guides (they use a pin instead of a dovetail to attach to the receiver). Standard Parts had some for sale, but they were gone by the time I found out about them. Other people have talked about having them made but eventually you never hear from them again about it (a few people have had them individually made). If the hi-cap mag ban screws me so that I only have one or two magazines, that feature would assume a lot of importance if maintaining a BM-59 as a practical rifle is desired (and I do desire that). Even in the Italian Army, they often had to load with chargers for want of sufficient magazines.