Got this one back the other day, with a well-documented 12K rounds through it. Not that that is so, so many but I don't often get to study a gun with an accurate round count on it, so it's pretty valuable info, a place from which to see what holds up and what works after a known amount of wear. It also helps me learn to be able to examine a gun and estimate its round count. I usually go right for the breech face for this and can call it pretty close but some guns are real foolers.
This project had a couple of themes-- as much stainless as possible, and as lightweight as possible, within budgetary reason, without using an aluminum frame. The first two pics show some of the lightening measures on the frame-- and extra window under the grip panels, low; holes under the grips just over the trigger track, and a window in the mag chute's rear wall just over the sear spring retaining slot:

lightening rr
Also, a hole under the barrel bed and feedramp, from the front, and a cut that actually hollows out the root of the front of the trigger guard, where it "grows" down from the dust cover:

lightening top
Lightening of the trigger is more of a standard measure for reducing its weight for trigger-bounce reasons. You can see also here the solid trigger stop I've fabbed. The grip safety has been whittled out on the inside, and.... whoa, what happened to that barrel!? That's why she came back-- a squib, a tap-rack-bang, or in this case, a tap-rack-kaBOOm.

barrel side w/gs, trig
Barrel from the inside:

barrel inside
Side view. Three major longitudinal cracks. A few more tried to start but it was over before they got too far. The case did not rupture and there was no damage to the mag or grips. Oh, yeah, and one of my favorite customers is OK too!

bbl burst side
Does black anodizing hold up well? This MSH is one I made from scratch from 7075 aluminum and had BA'd. All stainless parts were chrome sulphided by a place in CA that I thought had a lot of promise as a new finishing source for me. They also chromed the barrel and hammer and did a great job of it. The frame came back a little mottled-- which was not such a big deal but I wrote to ask it there was something I might have done or might do next time to prevent it. They were sorely offended and dissed me pretty bad so-- off the list they went. Anyway, as you can see here the finish on the stainless has taken something of a beating, not to say it is not good. This gun, besides the 12K rounds, has seen a lot of daily carry and several classes and competitions. It has been well used but well maintained, definitely not babied. But the black anodizing, hard as all get out, has held up well. Now, I did give the entire lower end a thin coat of black spray and bake to even out the aforementioned mottled apprearance.... this did not go onto the MSH however. This coat of paint is not stuck to the gun as well as it sticks to fresh Parkerizing but it has done its job in sorta "homogenizing" the color.

backstrap
Finish on the left rear of the slide takes a beating from wear and sweat,when carried IWB. The serrated front of the rear sight was used against a barricade to help initial efforts to get the gun apart after the incident. I think somewhere on the LTW there are pics of this when it was new

rr sight
This gun was built on a Caspian frame and slide and I must say they are holding up extrememely well. Wear on the breech face woulda fooled me into saying 600 - 1,000 rounds had been fired through it. Barrel locking recesses are likewise unbattered. Slide to frame fit is still fine.
More later.