AR15.Com Archives
 DPMS PROBLEMS ON AR..
AnaConda  [Member]
9/3/2006 6:44:10 PM EST
IT WON'T EJECT THE BULLETS OUT, JAMMING EACH OTHER SHOT... THINKING I BOUGHT A PIECE OF S***! ANY SUGGESTION FELLOW GUN LOVERS OR FREAKS..THE BULLET IS STAYING IN THE CHAMBER AND NOT EJECTING. I CLEAN THE HELL OUT OF IT, THE CARRIER KEY & GAS TUBE, IT'S HAS PLENTY OF LUBE.. HAD THE GUN STORE LOOK AT IT , THEY SAID THEY FIXED IT. BUT', STILL NOTHING IT JUST KEEPS JAMMING.after the bullet would fire it stays in the chamber, won't come out, mean while the new bullet is trying to load and getting stuck in the chamber.with one in the chamber and the other one coming throught the mag. it fires only one shot! help!
YEAH, SHELL CASTING!!!!!!!!!1
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UrbancommandoX  [Member]
9/3/2006 7:11:57 PM EST
You bought a good gun, I love my dpms. I bet your shooting wolf ammo. Shoot brass youll have no problems, guarenteed. To test my gun before changing parts I shot a mag of wolf and got 2 jams, then a mag of white box wally world brass flawless. Then again a mag of wolf 4 jams, then mag of brass no jams. Havent used anything but brass since and not one jam.
Stickman  [Dealer]
9/3/2006 7:22:24 PM EST
The use of all caps makes everything hard to read.

Are you having malfunctions, or jams? A jam requires tools, a malfunction can be cleared by the operator of the weapon through the use of immediate action.

What did the store say they fixed?

Have you contacted DPMS?
defenderhome  [Team Member]
9/3/2006 7:23:43 PM EST
Even with Wolf it should not jam that much. Need more info. What ammo are you shooting? Please explain in more detail what is happening. Is the bullet staying in the chamber or the casing? Is the extractor ripping of the rim or is it slipping off?
2FALable  [Team Member]
9/3/2006 7:45:35 PM EST
It isn't because it's a DPMS.

Something is causing your issues but you need to communicate more effectively if we're going to be able to help.
Trout15  [Member]
9/3/2006 7:57:19 PM EST
The Bullet is staying in the Chamber and not ejecting? I think you mean the Shell Casing right? The Round fires and the shell casing is stuck? I had a problem with an AR15 doing this before when I was shooting WOLF Ammo and then shooting BRASS CASED Ammo after the WOLF (without cleaning).

Lesson I learned? Shoot ONLY WOLF (which I won't because I think it's underpowered compared to Military Ball) or ONLY BRASS CASED AMMO.

I'll stick with Brass Cased ammo, no offense to the Wolf Comrades here.
TacticalOpsAR  [Member]
9/3/2006 8:32:06 PM EST
first take a deep breath, then maybe a beer.

is it failing to eject, or failing to extract

what are the specs on your rifle?
20". 16", 18"
new, used, etc?
ammo used?

sounds like maybe a gas or extractor isssue, but you did not give much info

RevDeadCorpse  [Team Member]
9/3/2006 8:45:31 PM EST
Sell your rifle to me. Switch to Airsoft.

AnaConda  [Member]
9/3/2006 8:53:44 PM EST
SOUNDS GOOD TO ME!!!!!!!!!!!!!!
AnaConda  [Member]
9/3/2006 8:54:22 PM EST
SOUNDS GOOD
AnaConda  [Member]
9/3/2006 8:59:40 PM EST
16" TWO MONTHS OLD,black hills ammo .223,I would say both failing to extract and eject. rifle is 5.54 &.223 dpms AR-15
TacticalOpsAR  [Member]
9/3/2006 9:14:10 PM EST
clean the chamber with a chamber brush and brake parts cleaner

remove bolt and remove extractor to clean and inspect. add a #60 o ring from lowes to extractor spring. the insert in the extractor spring should be black, not blue. if blue replace with correct extractor spring/insert

try a different ammo, like lake city M855

if this does not work, give DPMS a call
dmgangl  [Member]
9/3/2006 9:27:04 PM EST
+1 CLean chamber and check extractor and spring

If the rifle is clean, it sounds like its just a bad extractor spring. The rifle is too new to have the gas tube fouled up. The extractor should be in good condition conidering the age. I am willing to bet the gun store probably just ran a brush over the extractor and said it was fixed.
LIL-COMMANDO  [Member]
9/3/2006 9:46:12 PM EST
That is strange, I have a DPMS AP4 16" and there are no problems. I dont shoot Wolf ammo. I have shot about 700 rounds so far and not one malfunction but I am a Colt man and will be selling my DPMS. I have one Colt and it never caused a problem running it in carbine classes. The colt was purchased in 1992 and I need to go back to the Colt. I will be buying the LE6920 and a bud will buy the DPMS for $700.
bytor94  [Team Member]
9/4/2006 1:38:00 AM EST
What did the gunstore say they fixed?
shamayim  [Member]
9/4/2006 7:22:06 AM EST

Originally Posted By 2FALable:
It isn't because it's a DPMS.

.


Don't be so sure. More than one poster w/a DPMS piece has written in about a poorly chambered or otherwise defective new DPMS rifle.

None of us on this site are in a position to know for sure what this guys problem really is; and just because you, or someone else, have a perfectly functioning DPMS product does not mean that this guy didn't get a POS.

From all the postings I've seen re DPMS stuff, it appears that they expect the purchaser to be the final inspector of their product. Most folks get a good product. Some don't.

The hell of it is, we've had guys write in about sending a defective piece back to DPMS, and having DPMS respond that there's nothing wrong w/the item and then charge them for shipping it back.

I often get the odd DPMS small part, and have purchased two lowers of theirs. The last one had absolutely horrible finishing off of the front wall and rear curve over the grip area, but I bought it simply because I was planning to modify it to early A1 configuration, so I simply cleaned up that messy front and rear when I did the mods.

Let me repeat, I have no idea where this posters problems are coming from, but given the severity and nature of the malfunctions, the first place I'd look, if I had the piece in front of me, would be the chambering.
jvicent  [Member]
9/4/2006 10:37:01 AM EST
Why don't you give DPMS a call tomorrow and tell them about the problem. You may be pleasantly surprised.
Bradd_D  [Team Member]
9/4/2006 10:54:26 AM EST

Originally Posted By UrbancommandoX:
You bought a good gun


Doesn't sound that way so far...
Bradd_D  [Team Member]
9/4/2006 10:55:02 AM EST

Originally Posted By 2FALable:
It isn't because it's a DPMS.


I'd wager that it is...
HotIce  [Member]
9/4/2006 11:14:32 AM EST
If the rifle is clean and lubed (BTW not drawn in it), it's likely a too tight chamber. I'd go back to the gun store, and if they fail to ACK that, I'd call DPMS directly.


- Ice
Fuzzyone  [Member]
9/4/2006 11:19:29 AM EST
I have a DPMS, and it runs great. I shoot Wolf, old lacquered Russian Bear, and good ole brass cased commerically manufactured american fodder and it all works. As for DPMS, I have had very good luck with them. I deal primarily with the sales dept, and with Jason. They have been prompt friendly and fair. Referring to a manufacture equipment as a "pos" or other wise maybe a little harsh. Give DPMS a chance to help you and I think you'll be suprised. My2cents.

Fuzzyone.......
2FALable  [Team Member]
9/4/2006 3:30:28 PM EST
My point was it isn't because it's DPMS. It might be that the chamber is cut wrong. But it isn't JUST because it's a DPMS. I've had a DPMS barrel that the chamber was out of spec on. It could be that, but it still isn't the whole rifle.

Overall we aren't getting enough clear information to assist. DPMS builds a good rifle overall. That isn't to say they never have any issues, but just starting with it's a crappy rifle isn't going to solve the problem.

If on the other hand we can determine what is causing the problem, it will make calling DPMS much more effective.

Take the upper off and the carrier out. Then drop a bullet into the chamber. (A factory Winchester or something not a reload or something with a case that may be sized poorly)

Does the round drop all the way into the chamber? If you tip it up does the round fall out of the chamber?

If you can hear the bullet thunk into the chamber and it will fall back out, then likely the chamber isn't out of spec. If on the other hand a fresh round gets stuck in the chamber and you have to use a cleaning rod to tap it out, then the chamber is likely cut wrong.

Also what ammo are you using or have you tried?
mongo001  [Team Member]
9/4/2006 4:16:46 PM EST
FWIW, the only barrel I ever owned that was reamed short, meaning it would not even chamber a round, no matter what I did or used, was a DPMS. Nothing a chamber reamer couldn't fix, but there you go.

ETA: I guess I'm saying I wouldn't have too much faith in a DPMS "assembly", but I use alot of their small parts, their smooth top hammers come immediately to mind.
www-glock19-com  [Team Member]
9/4/2006 5:31:44 PM EST
Have had a few customer guns from DPMS have FTeject problems

I would try scrubbing the chamber and make sure it is clean and free of any burrs

after that if the chamber has problems like being to short , too small or rough
you'll have to send it to DPMS

We only sell RRA Colt and Bushmaster anymore

gave up on Oly and DPMS

they make OK stuff but the lemon % seems to be a bit higher


where the heck is VIR?
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