DDM4 vs PMAG?

trojanman · #1 10-21-09, 20:52

I recieved my ddm4 2 days ago and have not shot it yet but I have noticed that the pmag that came with it does not lock back the bolt. I removed the upper to have a better look, this showed that the follower is not making contact with the slide stop. When I put in a gi mag no problem.I have only used standard GI mags previously and wanted to like the pmags but with this Im not sure. Any thoughts?

nutnless220 · #2 10-21-09, 22:47

My DDM4 locks back fine on an empty PMAG.
All my Pmags are the Rev. M version.

MarshallDodge · #3 10-21-09, 22:51

Are you sure the PMAG is fully seated? Its a stretch but may its a bad PMAG.

emt370 · #4 10-21-09, 22:52

I got two PMags in FDE last year. When I loaded them up the first time, I noticed that the rounds were tilting a little and not seating right. Upon closer inspection, I saw that there was some flashing from the mold under the feed lips near the back of the magazine interior. The rounds and likely the follower were hitting that and not getting to the bottom of the feed lips. I just grabbed a razor and cut the flashing out and 2 seconds later they were 100%. Worth checking out as it might be keeping your follower too low.

Icculus · #5 10-21-09, 23:05

I have about 20 pmags (some rev M, some not) and the bolt locks back with all of them in my DDM4--guess that doesn't help you much does it. Doubt its a bad mag, I would just check for some excess flashing as emt370 suggested

trojanman · #6 10-21-09, 23:25

I missed one key fact, the follewer is foward of the slide stop. I did take the mag apart ane see no problems.

Blob · #7 10-22-09, 00:56

Quote:

Originally Posted by trojanman

I missed one key fact, the follewer is foward of the slide stop. I did take the mag apart ane see no problems.

You mean like this:

This is with my Superior Arms lower. Either the bolt catch groove or the bolt catch itself is out of spec, because the catch has enough room to wobble back and forth which causes the follower to ride up in front of the catch. This happens with both versions of PMAGs and D&H GI mags with green followers. I have a RRA LPK in this lower. All my mags work fine in my DPMS lower.

trojanman · #8 10-22-09, 01:25

Thats exactly what is happening. Its BS Im not too happy with DD so far, this and no heavy buffer. WTF

Blob · #9 10-22-09, 01:35

Does the bolt catch have a significant amount of wobble?

PRGGodfather · #10 10-22-09, 01:55

Both of the vendors in question, Magpul and Daniel Defense, never claim to be perfect -- and as such, I am certain both will expend all reasonable efforts to make good if contacted about the problem, once the issue is isolated.

Try this with other PMAGs, if possible, since this phenomenon does not occur with your GI mags -- so the PMAG may be the issue.

I have three friends who purchased DDXVs. Two had stamped H buffers, and one buffer was not stamped. I contacted DD about the buffer, and they said they only used H buffers, although some were not stamped. When weighed on an RCBS scale, the unstamped buffer also weighed 3.7 ounces overall.

It is a rare occurrence perhaps, but people, systems, and mechanisms are fallible. Both Magpul and DD have excellent customer service, if such issues are brought to their attention. They certainly should get a chance to correct the problem(s).

As the sun shines even on a dog's behind -- sometimes, it rains.

Blob · #11 10-22-09, 02:02

Quote:

Originally Posted by PRGGodfather

Both of the vendors in question, Magpul and Daniel Defense, never claim to be perfect -- and as such, I am certain both will expend all reasonable efforts to make good if contacted about the problem, once the issue is isolated.

Try this with other PMAGs, if possible, since this phenomenon does not occur with your GI mags -- so the PMAG may be the issue.

I have three friends who purchased DDXVs. Two had stamped H buffers, and one buffer was not stamped. I contacted DD about the buffer, and they said they only used H buffers, although some were not stamped. When weighed on an RCBS scale, the unstamped buffer also weighed 3.7 ounces overall.

It is a rare occurrence perhaps, but people, systems, and mechanisms are fallible. Both Magpul and DD have excellent customer service, if such issues are brought to their attention. They certainly should get a chance to correct the problem(s).

As the sun shines even on a dog's behind -- sometimes, it rains.

Good advice. The quality of a company is not judged solely by the product they put out, but also by their willingness to make things right.

00leland00 · #12 10-22-09, 09:39

While I was there we had at least three different sources for buffers, some were stamped, some not, hell some of them were black. Never the less they were all H buffers.

rjacobs · #13 10-22-09, 10:13

What has DD and Magpul said about the issue? Both of them have excellent customer service, especially DD, so I am positive your issue will be resolved. When I got my M4 the roll pin for the charging handle latch was drilled incorrectly and wouldn't latch, they sent me a new charging handle and said if that didnt fix it they would send me a whole new upper. I know they will do everything to make it right. I also know magpul has excellent service, but I have not had to use it yet.

Terry · #14 10-22-09, 10:27

While frustrating, contacting the company, or companies involved would be the best thing to do if you are unsure.
Companies reputations are forged, not given, especially here.
With the reputation of both these companies being excellent, I would think a resolution to your liking would result.
Good luck, Terry.

tylerw02 · #15 10-22-09, 13:04

Before you get too angry and upset, contact Daniel Defense. They have great customer service and I'm sure they would love an opportunity to correct your issue.

Belmont31R · #16 10-22-09, 14:20

If the trip the bolt catch in another lower Id just put in a new bolt catch.

Ive had a few 'bad' parts. No way to know until you actually put those parts in use. Ive had the 'bolt catch spring' be too strong, and the mag springs didnt have enough oopmh to lift the catch as the catch spring was counteracting too much. Put in another spring and no problems.

Thats why I always keep a LPK or two around.

C4IGrant · #17 10-22-09, 15:24

Quote:

Originally Posted by PRGGodfather

Both of the vendors in question, Magpul and Daniel Defense, never claim to be perfect -- and as such, I am certain both will expend all reasonable efforts to make good if contacted about the problem, once the issue is isolated.

Try this with other PMAGs, if possible, since this phenomenon does not occur with your GI mags -- so the PMAG may be the issue.

I have three friends who purchased DDXVs. Two had stamped H buffers, and one buffer was not stamped. I contacted DD about the buffer, and they said they only used H buffers, although some were not stamped. When weighed on an RCBS scale, the unstamped buffer also weighed 3.7 ounces overall.

It is a rare occurrence perhaps, but people, systems, and mechanisms are fallible. Both Magpul and DD have excellent customer service, if such issues are brought to their attention. They certainly should get a chance to correct the problem(s).

As the sun shines even on a dog's behind -- sometimes, it rains.

Correct. DD also does NOT make the bolt catches they use so it is really another manufacturers error.

The OP just needs to contact DD and they will swap out the part.

C4

trojanman · #18 10-22-09, 19:30

Thanks for the replys, will contact DD in Am