By John Siers a.k.a. “Gunsmith Jack”
Most gunsmiths rarely get to see a Raven MP-25 (or its nearly-identical predecessor, the P-25) let alone work on one. Raven Arms went out of business after fire destroyed the Raven plant in 1991, and while the MP-25 continued to be produced for a short while by Phoenix, it was out of production before the end of the century. The gun is generally held in low regard by the shooting sports community, and since used-but-functional Ravens can be found on the market for less than $100, it is hardly worth the money to have a gunsmith repair one of them.
I’m mostly retired, and have tried to keep my gunsmith business small so that it is still more fun than work. I don’t have a retail store front and I don’t do much advertising, so most of my business comes from gun store referrals or long-time customers. As a result, I have time to spend on gunsmith projects that won’t bring me much money but are interesting and fun. I’ve looked at a lot of the so-called “Ring of Fire” guns – Bryco, Jennings, Lorcin, etc. and find that I like the Raven best. For some time now I’ve been running a little “Raven Rescue” operation in my shop, buying these guns in sad, sorry condition in bundles from pawnshops and other gun dealers, often paying as little as $15 per gun. Parts are readily available from various sources, so I clean them, fix them, and pretty them up for resale. They usually bring from $70 to $90 dollars apiece. I could say that I’m making money at it, but only if I count my time to be worth about $5.00 an hour. But it’s fun, I like the little Ravens and I get to have a lot of fun test-firing them.
If you’ve never worked on one of these and think you’d like to try it, here’s a short course we’ll call “Raven 101.” I’ll refer to the MP-25 but the older P-25 is similar enough that it makes no difference from a gunsmith standpoint.
The Raven MP-25 is a striker-fired, blowback-operated pistol in .25 ACP. It came out as the P-25 in 1970, and was the first pistol to use an injection-molded zinc alloy called Zamak for both frame and slide, a process later adopted by other companies making cheap semiauto pistols. Gun gurus claim this alloy is not very durable; but there are an awful lot of Ravens still in service after many years of use (and abuse) and thousands of rounds of ammo fired. They may not look pretty, but they are still functional.
The basic MP-25 design is really simple, with a complete tear-down producing around 20 parts (excluding the grips and grip screws – see photo).
You start the tear-down by depressing the slide latch/striker-spring cap in the rear of the slide, which lets you lift the rear of the slide and take it forward off the gun. Watch out at this point, because the latch and striker spring may want to go into orbit (to use a Bob Dunlap expression). Taking the grips off leaves the frame and most of the action parts open to view, and at that point you want to make sure that various other parts including the safety, the disconnector, the sear and sear spring do not also fall / fly off and disappear. Simply popping the disconnector off the side will cause the sear to launch itself into space with its spring right behind it.
The Raven fire-control system consists of a single trigger bar and a disconnector that is mounted externally on the right side of the frame. The sear and sear spring mount vertically in a well in the center of the frame. The disconnector retains the sear and is itself retained by the right grip, which also keeps the trigger bar in alignment with the disconnector. Without the grip, the trigger bar can slip outside the disconnector.
On the left side of the frame you will find the safety, which blocks the sear when placed in the safe position. Older models have a sliding-bar safety with the detent being a small bump molded into the frame. Newer guns ( as shown in this picture) will have a rotating-disk safety with a ball-bearing and spring detent in the frame. In both cases, the safety is retained against the frame by the left grip. Both versions work the same way to block the sear, but the newer version also blocks the slide so that the gun cannot be cycled to load or unload unless the safety is in the “Fire” position. With the older models, I’ve had problems with the safety bar rubbing against the slide, so that when the slide cycles back (on firing) it drags the safety bar back with it, setting it to “safe” and stopping the gun from firing again. This can usually be fixed by making sure the safety bar is straight and has no burrs, sharp edges, or other protrusions that can catch on the slide.
The MP-25’s extractor is mounted on top of the slide, pinned in place retaining the extractor spring. It looks wider and heavier than it needs to be, but it seems to be well designed and functional. I have never had extract / eject problems with a Raven whose extractor was in place, undamaged, and not clogged by crud. The striker has lots of positive protrusion, and serves as the ejector when the slide comes fully to the rear (see picture).
The gun tends to throw brass nearly straight up and only slightly to the rear. If there’s a low ceiling or roof over your shooting station, you can expect the gun to rain brass down on your head; but out in the open, you usually wind up with a neat scattering of brass directly behind you. In my opinion, the mark of a good extractor / ejector system is how consistently the gun throws brass, and the Raven scores pretty high in that category.
(Watch for Part 2 of this article soon, right here on GunsmithUSA)
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