I HAVE A VULCAN MAC 10 (45 CAL). I know that this type of gun is known to jam a lot.?

Question

Just wanted something fun to shoot. Anyway, every time I load up with either a full 30, 20, or 5 rounds. The gun will JAM every 1-3 rounds. I noticed that the tip of the bullet gets cought at the bottom of the feed ramp. I was planning to shave the bottom of the feed ramp a little bit. To give it a more of an angle and smoother feed.. If anyone has a better idea. Can you tell me.

Thanks

Answer 1

Assuming you have already completely disassembeld and cleaned the entire gun, you could try a new or different magazine.

Answer 2

The others have said the right things, polish your entire feed ramp, try a new magazine, possible cut and/or rebend the feed lips on the magazine to give the bullet a higher angle upon feeding. You're completely right about those things jamming, even the 9mm and .380 models have the exact same issues as yours does, something about their design just creates the misfeeding. The Ingram, which they were modelled after tho was a fine weapon, but it needed it's feed ramp polished as well. You may find that after a good ramp polish that it will work fine for a while, and then develope the same misfeeding and jamming issues it demonstrates now, simply repolish the ramp, I have fired many ingrams that have had the same thing happen to them after feed ramp polishing, after a while you'll need to repolish the ramps.I'm talking about several thousand rounds after the initial polish.New magazines may help solve the issue, or modifying the magazines you have now may also help.As Doc said, those things are great fun, but they are very expensive to feed, and very frustrating too when you're trying to blast a milk jug and it jams & jams & jams etc etc.

Answer 3

Mac 10 45 Cal

Answer 4

As the other poster said, it may be a magazine related issue. I've had bullets that got caught on the front lip of the magazine as well. You should probably only use full metal jacketed bullets and if you polish the feed ramp, do it like I did. Take a dremel with that finger shaped felt tip and the red polishing compound. Buff the WHOLE feed ramp and work from the top of the ramp down, using the whole side of the felt tip so you have an uninterupted polishing of the ramp.

Good luck with it, they aren't reliable, but they can be fun if working correctly.

Answer 5

Failure to feed relaibly is often the fault of a bad magazine.

Does your M10 use M10 magazines(plastic or metal?), modified M3 grease gun magazines, or unmodified grease-gun magazines?

If it uses Mac 10 mags, try a new one.

If it uses modified grease gun mags, try a Mac 10 magazine made by RPB or Cobray.

If it uses unmodified grease-gun mags, these are easily found. Try a new one.

If you aren't shooting round-nose full metal jacketed "Ball" ammo, then that could be the problem. M10's are designed to shoot ball, only.

If you decide to polish the feed ramp, I'd get a gunsmith to do it so the geometry doesn't get screwed up.

Answer 6

I used to build 1911's back in the 80's. You need to tell me a heck of allot more before anyone here can be of help. Like what kind of ammo is jamming, is there any ammo that does not jam, how old is it, how many rounds have been through it, is it stock or has anyone dinked with it???? Does it jam on the 1st round when you release the slide stop, or, does it jam when held all the way back when released? Hand it to your buddy - does it jam when he fires? If so, you are limp wristing the thing. You need to tell us the facts.

Answer 7

I agree with the others.

Polish the feed ramp, use round-nosed hardball, and be sure you don't limp-wrist the pistol. And most important of all, get a new magazine, that could easily be the problem.

Those suckers are beaucoup fun, but expensive to feed.

Doc