so that you have the needed metal to fit a dovetailed rear sight and the extractor. a vertical pin thru the slide retains the extractor. It never occured to me that drilling that out from underneath, thru the "cap' fo metal that I added to the slide, would cause problems. The hole size is .055". i just drilled it out 1/16" inch, but when the drill bit went thru the slide and hit the curved inside of the piece of tubng that I'd added, the drill bit of course was deflected and broke. It also broke at the shank, right fluse with the slide.
I had to grind a hole in the cap, drive out the broken bit, weld up the hole, and be a lot more careful, with much better bits and lots of WD-40, higher RPM on the drill press, etc, to get that hole drilled in that steel cap. The parts that i had dreaded, fitting the extractor, hardening it, hardening the threads on the extended barrel and the threat protector, that went off without a hitch. What i SHOULD have done was drill the hole into the cap from underneath, having ground a flat spot on it, and put a pin thru the slide and the cap, and THEN tig-welded all around the 4 sides of the cap.
The barrel was then no longer a tip up, due to the extractor notch I had to put into its rear end. So I pinned down the barrel and convered the barrel-release lever into a slide-lock. to hold the slide shut for maximum suppressive effect. When you sprayed the guts of the can with WD-40 and then squrted in water, locked the slide shut, and wrapped tape around the can so that it didn't "ring") it was BB gun quiet. It needed the baffled cleaned every 100 rds. Not bad in a 15 oz, 9" long gun, that still grouped 2" at 25m.
A big part of that was bending the trigger into a more-acute curve, getting rid of the overtravel.
The DA trigger option went with the overtravel, but that's ok. I preferred the speed safety lever and cocked and locked carry anyway. I put the luminous front sight on the can and the rear of the slide, and the sight that I dovetailed into the thread protector was just plain blued steel. if I needed the night sights, I'd also need the can. and the night sight is just a distraction for real precision work in daylight.
I think wifey will one day be marketing such M21's to the oil sheiks and similar folks in S america and Europe. There's never been anything like it and a lot of bets can be won with such a gun. if you've got good eyesight and can really shoot.
I had to grind a hole in the cap, drive out the broken bit, weld up the hole, and be a lot more careful, with much better bits and lots of WD-40, higher RPM on the drill press, etc, to get that hole drilled in that steel cap. The parts that i had dreaded, fitting the extractor, hardening it, hardening the threads on the extended barrel and the threat protector, that went off without a hitch. What i SHOULD have done was drill the hole into the cap from underneath, having ground a flat spot on it, and put a pin thru the slide and the cap, and THEN tig-welded all around the 4 sides of the cap.
The barrel was then no longer a tip up, due to the extractor notch I had to put into its rear end. So I pinned down the barrel and convered the barrel-release lever into a slide-lock. to hold the slide shut for maximum suppressive effect. When you sprayed the guts of the can with WD-40 and then squrted in water, locked the slide shut, and wrapped tape around the can so that it didn't "ring") it was BB gun quiet. It needed the baffled cleaned every 100 rds. Not bad in a 15 oz, 9" long gun, that still grouped 2" at 25m.
The DA trigger option went with the overtravel, but that's ok. I preferred the speed safety lever and cocked and locked carry anyway. I put the luminous front sight on the can and the rear of the slide, and the sight that I dovetailed into the thread protector was just plain blued steel. if I needed the night sights, I'd also need the can. and the night sight is just a distraction for real precision work in daylight.
I think wifey will one day be marketing such M21's to the oil sheiks and similar folks in S america and Europe. There's never been anything like it and a lot of bets can be won with such a gun. if you've got good eyesight and can really shoot.