Okay, I'm a dipstick! I can get my barrel threaded 14x1--I wasn't reading my caliper properly. Duh!
Anyway, I'm dumb, but much happier now(isn't that the way it's supposed to be?), so please disregard my above questions.
ttman,
I did the welding on the G3 sights myself. My first love is the G3/HK91, and I've built a few clones. My first was clone was built on a Hesse receiver, and it was a piece of garbage(cracks/poor fit/typical Hesse quality). I ended up chopping it up and doing practice welding on it. I bought a NIB milled MAK90($400 on AuctionArms--not bad) as a shooter, but I hate the sights and the stock was disintegrating after 100 rounds. Had the idea for the G3 sights when I saw a Krebs custom with the picatinny rail on the dust cover. Krebs doesn't sell this as a separate item, and Galil sights seemed out of the question, I had a (brief/rare) flash of brilliance and I was able to remove the rear sight base off the Hesse G3 and got it to fit on my dust cover with Dremel, file, and a little love from my 20 ton press. I tig welded it with my cheap POS Italian Kellmar welder(lift arc on it somehow makes the power drop after a couple seconds when the tungsten gets close to the work surface. Nobody seems to know how to fix it). The weld is pretty good considering the welder's drawbacks. Also had an extra triple frame sight tower. I cut off most of the lower ring and Dremeled(is this a real word?) it until it fit on the gas block, and finally attached to the block via a single plug weld in the hole where the G3 cocking tube plug's plunger usually sits. This weld looks sort of crummy, but it works. I haven't decided what to do with the MAK's original rear sight yet. Probably just cut the end off, turn it upside down, and put it back on the gun to cover the hole in the block.
It should all look good after it's painted. Also, I have spent the last two weeks trying to build a receiver block for an Ace stock. This has been really tough, but it's about 80 percent done and should work. I'll need to buy the Ace stock and folding mechanism before I can finish. I'll definitely post pictures when it's all done. It's going to be a pseudo-Galil looking rifle. I sure do enjoy the dark side!