I had a case head separation in a 9mm AR. How do I get the rest of the case out?
Ouch, the base of the round is off, so it’s just the tubular section of the case stuck?
If so, pull the upper and bcg and get a fine pick in there, preferrably one made from brass and work to get the point of the pick beneath the casing and compress in, gradually working a spot at a time until it loosens up.
If that doesn’t work, gunsmiths have a case extractor that will do the job … a buddy may have one as well or you can order from Brownell’s or similiar.
It’ll come out, don’t resort to heavy handed measures and all will be well.
Yes just a tube of brass. I called Brownells and they don’t have a tool for that, just rifle calibers. If you know where I can buy one let me know. Your idea may work though, I am a little concerned about damaging the chamber.
You might want to try to “chill” it down with some contact cleaner, it may slide out with a bore brush or a pick.
You won’t damage your chamber using a brass pick … much softer than the steel of your chamber. You can use a piece of wood or plastic first … it may not be that stuck in there so with some clp or whatever and some good, repetitive pokes, it may work itself loose.
It’s in there so tight that there is no way to get under it.
You MIGHT find a bolt extractor that’s large enough to grip the case, yet small enough not to bugger the chamber…
Crud.
Here’s a technique used in this video that may help … keep us posted. Get some penetrating oil in there too before you try.
I thought I read somewhere you could insert a .40 cal bronze bore brush into the case and pull it out.
Metal Bore brush often works. Insert slowly from breech, then pull out. The wires slanted backwards push against the case mouth and even the inside of the case.
Much better than picks. It’s like using a dozen picks at the same time
Tried this no luck.
I think a chamber reamer might be a good way to get the stuck case out. Ned Christiansen’s tool might do the job nicely. I’d talk to Ned and see if he thinks it could help. http://www.m-guns.com/tools.php
Last resort but it will work if done correctly.
1_ Remove the barrel from the upper receiver.
2_ Clamp it using a barrel clamp and vise. (Here’s where a rotating axis comes in handy.)
3_ Using a long thin jeweler’s screw driver, gently insert the blade such that it enters the between the chamber and case. As it is inserted do not pry and take care not to scratch the chamber.
4_ Repeat above with a slightly larger blade until there is enough room to insert long needle nosed pliers.
5_ Spray some penetrating oil into the space you’ve just created.
6_ Gently insert the pliers taking care not to scratch the chamber and work the brass toward the center of the chamber until the pliers have a good grip on the case.
7_ Rotate and pull. The case should come out.
Good idea … a chamber brush that’s larger than 9mm. OP … got something there you can try with?
Yep, last resort but looks like the OP is bumping into this now. Helpful instructions / detail.
OP … what do you think is your next move? Getting frustrating I’m sure, but this will pass. Just don’t go into “pissed off” mode and do something gorilla-ish that’ll mess up your chamber.
I have tried the bore brush trick but, with old brushes. I will get a couple new ones and try that. I called Brownells and they said to use a tap to cut into the case wall and then push out. Or maybe a bolt that fits just tight enough. If the new brushes don’t work I will probably have a gunsmith work it out.
Remove the handguards from the upper. Insert an earplug, plastic plug or something that will stop/slow the flow of oil out of the chamber. Tilt the muzzle up and squirt in enough penetrating oil to fill the chamber. Set it on something you are willing to throw away and allow it to soak overnight.
Push out the earplug with a brass rod. Screw in a 3/8" bolt just enough for the threads to engage the brass. A cheap 3/8" tap will also work. Insert a brass rod from the muzzle end and tap with a hammer.
It may take a few tries, but it will usually work.
Good idea on using a tap die, or a bolt … you could maybe find a bolt with a tapered point so you can feel for putting more or less threads into. Don’t get hi-hardness rated steel bolt. Your chamber is much harder than unhardened bolt, so you should be okay … just cosmetic scratching at worst.
You might be surprised at how well penetrating oil seeps in between the brass and chamber. You may not need to use a bolt or tap to remove the brass.
Start with the softest tool on hand.
Yeah, I agree … something like PB Blaster. It’s helped loosen rusted nuts & bolts I swore were welded. It will get behind that case if the OP plugs up the barrel as described. Could be the easy ticket like you say.
Any reason you wouldn’t use Kroil for this? Plug the chamber, set the end of the receiver in a plastic tub (disposable kitchen type available at the g-store or Wally world) and fill the chamber from the muzzle end as noted. When you pull the plug let it drain into the tub. No mess. If you want you can strain and reuse the Kroil. Good stuff.