Page 1 of 5 123 ... LastLast
Results 1 to 10 of 43

Thread: DD 14.5" Midlength FTF

  1. #1
    Join Date
    Apr 2008
    Posts
    163
    Feedback Score
    10 (100%)

    DD 14.5" Midlength FTF

    Today I was able to get my new DD 14.5" upper to the range and had a FTF on every 8th round with my PMAG 10round/20 bodies. Specifications below. I thought it was a magazine issue, but I had my buddy who was running a STAG 16" carbine use my magazine with the same ammo and he had no problems. Therefore, back to the gun. Is it my H buffer should I go to a regular buffer? Did I not clean the BCG enough before taking it out to the range for the first time? When I received the new Upper and DD M16 BCG from DD it was covered in packing/shipping oil which was very thick. I am shooting my normal range ammo which is Fiocchi .223 55gr. The gun is very accurate, zero'd at 25 yards and I was hitting steel at 200 yards with ease. Just want my gun to cycle with out any Failures. Any recommendations appreciated. With the Failure to Feed I was seeing the bolt getting stuck half way closed with the next round halfway out of the mag and half way starting to go into the chamber. Once cleared, the round would have a noticeable dent in the casing. Details below.

    Upper from Smartgunner/Daniel Defense
    14.5" DD 1:7 Lightweight Profile Mid Length Gas System
    DD Low Profile Gas Block
    VTAC Troy 11" TRX Extreme
    BattleComp 1.5 Black Oxide
    DD M16 Bolt Carrier Group
    Troy Flip up front and rear battle sights
    BCM Gunfighter CH MOD5

    DD lower built by Grant:
    LMT LPK
    BCM 6position Reciever Ext
    Colt Castle Nut
    G&R Tactical SS Buffer Spring
    H Buffer
    SOPMOD buttstock
    Hogue Grip
    Magpul Trigger Guard
    Magpul ASAP


  2. #2
    Join Date
    May 2010
    Location
    down by the river
    Posts
    543
    Feedback Score
    15 (100%)
    I find it hilarious that in almost every thread I see where someone complains about their gun not working, they list the mag of choice as PMAGS. I just deleted a bunch of text because I don't want to derail this topic and turn it into a PMag bashing thread. I'll just suggest you try some different mags.

  3. #3
    Join Date
    Apr 2008
    Posts
    163
    Feedback Score
    10 (100%)
    If it was the mag, why did my buddies Stag 16" who used my same mag not have the problem?

  4. #4
    Join Date
    Oct 2010
    Location
    SWMT
    Posts
    8,165
    Feedback Score
    32 (100%)
    If it is the mag, it could be the gun/mag combination.

    Not that I believe that it's the mag, as I simply don't know.

  5. #5
    Join Date
    Oct 2008
    Location
    oregon
    Posts
    7,126
    Feedback Score
    7 (100%)
    Quote Originally Posted by NongShim View Post
    I find it hilarious that in almost every thread I see where someone complains about their gun not working, they list the mag of choice as PMAGS. I just deleted a bunch of text because I don't want to derail this topic and turn it into a PMag bashing thread. I'll just suggest you try some different mags.
    as an SME, if you have uncommon information about pmags, i think we'd all find it very interesting and relevant.
    Last edited by bkb0000; 12-28-10 at 00:34.

  6. #6
    Join Date
    May 2010
    Location
    down by the river
    Posts
    543
    Feedback Score
    15 (100%)
    So as to not derail this thread, let's look at what is going on. It doesn't sound like an issue with the workings of the gun, since other than the 8th round, it supposedly cycles just fine. If the issues were occurring all the time, I'd be more inclined to think it was an issue with the gun itself. I'm a visual person, so it would be easier with a picture, but I'm wondering if there is an issue with the tension of spring getting weaker as the mag empties and not pushing the round up fast enough as the tension decreases. I'm guessing these are modified mags for a Kommie state? I'd suggest calling the company that modified them.

    I have seen a DD gun that malf'd a good bit. I don't recall what it was doing, but I recall the mag variable being eliminated. Also, the malfunctions were sporadic, not consistent like your every-8th-round issue. Being a new factory rifle, I think the owner was going to just send it back to DD.

    I get what you're saying about the mag working in your friend's gun. When I had PMags, most of them would work great in one of my guns, and work like shit in other guns. The idea of having certain mags that will only work with certain guns of mine was not satisfactory, so I moved on to other mags. If you try some other mags, you can eliminate your PMags as the issue. To clarify, you said, "bodies" implying more than one, but you spoke of your friend shooting a singular mag. Is this your one an only mag? Did you shoot any of your friend's mags? The magazine is the easiest variable to eliminate.

  7. #7
    Join Date
    Jul 2009
    Location
    Northern Kentucky/Cincinnati, OH
    Posts
    511
    Feedback Score
    0
    Quote Originally Posted by bkb0000 View Post
    as an SME, if you have uncommon information about pmags, i think we'd all find it very interesting and relevant.
    I would agree. Many SMEs and IEs swear by them, and literally protect their lives with them. What are your findings?

    What do you recommend instead? Plain ol' USGI? USGI with magpul follower? Lancers?
    Last edited by Whootsinator; 12-28-10 at 01:48.

  8. #8
    Join Date
    Dec 2008
    Posts
    196
    Feedback Score
    0
    I say you clean the gun and BCG properly and remove all the factory gunk. Lube with the proper gun oil of choice and take it back to the range. I'll bet it will be spot on without another FTF.

  9. #9
    Join Date
    Oct 2008
    Location
    Southern Indiana
    Posts
    4,244
    Feedback Score
    61 (98%)
    Quote Originally Posted by NongShim View Post
    I find it hilarious that in almost every thread I see where someone complains about their gun not working, they list the mag of choice as PMAGS. I just deleted a bunch of text because I don't want to derail this topic and turn it into a PMag bashing thread. I'll just suggest you try some different mags.
    I would take it a step farther. It usually seems to be 20 round PMAGs.

    Only Failures I have had on 2 guns have been because of a 20 round PMAG. I just tossed the mag and my 30s work great.

  10. #10
    Join Date
    Apr 2008
    Posts
    163
    Feedback Score
    10 (100%)
    Quote Originally Posted by NongShim View Post
    So as to not derail this thread, let's look at what is going on. It doesn't sound like an issue with the workings of the gun, since other than the 8th round, it supposedly cycles just fine. If the issues were occurring all the time, I'd be more inclined to think it was an issue with the gun itself. I'm a visual person, so it would be easier with a picture, but I'm wondering if there is an issue with the tension of spring getting weaker as the mag empties and not pushing the round up fast enough as the tension decreases. I'm guessing these are modified mags for a Kommie state? I'd suggest calling the company that modified them.

    I have seen a DD gun that malf'd a good bit. I don't recall what it was doing, but I recall the mag variable being eliminated. Also, the malfunctions were sporadic, not consistent like your every-8th-round issue. Being a new factory rifle, I think the owner was going to just send it back to DD.

    I get what you're saying about the mag working in your friend's gun. When I had PMags, most of them would work great in one of my guns, and work like shit in other guns. The idea of having certain mags that will only work with certain guns of mine was not satisfactory, so I moved on to other mags. If you try some other mags, you can eliminate your PMags as the issue. To clarify, you said, "bodies" implying more than one, but you spoke of your friend shooting a singular mag. Is this your one an only mag? Did you shoot any of your friend's mags? The magazine is the easiest variable to eliminate.
    You're correct these are CA modified mags. I have two of them. But only one was consistently giving me the problem on the 8th round. They are not new mags as I have had them for a while and have used them on my own Stag 16" with out any problem. I did give the one I was consistently having a problem with to my buddy to see if he would have the same issue. As earlier indicated he did not.

    With that said, I'll get some new mags and go back to the range. I did give the BCG a good cleaning as well.

Page 1 of 5 123 ... LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •