Update. Sorry I haven't given one in a while, but I'm still waiting for a few more parts and tools. In particular a set of roll pin holders because I don't want to try the gas block pin without one. They should arrive shortly. Also, I've been a little busy elsewhere. I acquired a couple of 80% lowers (unfortunately, one of them is a "Polymer" but oh well... it came with the jig), in order to prepare for what may be coming under Biden. Also, I may very well be able to acquire a Mossberg 590a 12G tomorrow. It's not a semi-auto like the 930s I had, but it should hold me until I can scrape enough up for a JM pro, assuming prices haven't sky rocketed.
As for the build, I received the Colt built Delta Ring assembly, but I find no appreciable difference between it and the one I assembled on the barrel, except that the spring tension on the Colt is much harder/tighter. Hard to depress it. I was trying to see if I could get the HG to fit on it. What I discovered about that is that HG has a grove on both sides where I believe the teeth of the barrel nut should fit. I wish I could show you and image of it but I can't upload images directly and "Imgur" now requires a login or white list on Ad Block Plus. I think the teeth of the barrel nut go inside that grove when the HG is attached. I'll have to work on that a little. It may require a wee bit of dremmelling on the HG. It still doesn't fit perfectly. Just a little dremmeling... not much.
Oh, BTW, I figured out what happened with that first gas block I purchased... the one where I thought they hadn't supplied the set screws. In fact, they had. What they supplied were internal allen key set screws, just not the ones with the heads on them. DUH! Well, I'l l be using that first one on the build. I just have some more parts for the next build.
Anyway, I'll keep you posted. Hopefully I can finished up this build with in the month and get it ready for test firing. Then I'll be back for some suggestions on how to do that safely.
Thanks all!
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