dtom Posted August 31, 2016 Author Report Share Posted August 31, 2016 On 8/29/2016 at 3:14 PM, 98Z5V said: How many rounds have you fired through this rifle, total, now?... about 60 rounds Quote Link to comment Share on other sites More sharing options...
dtom Posted August 31, 2016 Author Report Share Posted August 31, 2016 14 hours ago, 392heminut said: Box it up and send it back to DPMS and let them deal with it. It's a new rifle and you shouldn't be having to deal with all the problems you're having! you are right but i am trying to save the hassle of shipping. i have couple more options that i want to try and then i will ship it if i have to. Quote Link to comment Share on other sites More sharing options...
dtom Posted August 31, 2016 Author Report Share Posted August 31, 2016 here is the latest.... i just got of the phone with dpms. i finally got a tech who knows what he is talking about. he said that magpul mags are no problem as a matter of fact the manual states that magpul mags work with this rifle. he said the only thing that needs to be broken in is the barrel. now as far as the cycling issued is concerned, he is almost 100% sure that it could be a misalignment of the gas block or something could be obstructing the gas port. as far as the grains of bullet, they do recommend no less than 168 but 147 and 150 should work too. he said he had couple of rifles with the same issue and just by realigning the gas block the rifle works flawlessly... he did give the option of sending it back.. he said i can void the warranty if i fix it myself.. i mean i can take it to a gunsmith if i have to.. what do you guys think Quote Link to comment Share on other sites More sharing options...
survivalshop Posted August 31, 2016 Report Share Posted August 31, 2016 (edited) Anything under warranty , you should send back , get a return shipping label from them & send it in to have them go over it . It may not just be a Port alignment issue , let them give you a rifle back that should function flawlessly right out of the box . Edited August 31, 2016 by survivalshop Quote Link to comment Share on other sites More sharing options...
EngrBob Posted August 31, 2016 Report Share Posted August 31, 2016 Send it back! Quote Link to comment Share on other sites More sharing options...
98Z5V Posted September 1, 2016 Report Share Posted September 1, 2016 On 8/31/2016 at 10:48 AM, dtom said: about 60 rounds It's not even broken in. Seriously. Carbon fouling needs to seal the gas block, BCG needs to mate for the contact points in the upper - and new magazine springs need to cycle. Get more rounds through it... Quote Link to comment Share on other sites More sharing options...
dtom Posted September 6, 2016 Author Report Share Posted September 6, 2016 here is the latest. i about to ship it back but i made a discovery. the reason why the bcg is not locking back at last round is because the follower on the pmag doesn't stick up far enough to engage the bolt catch. so back to square one. maybe 308 pmags don't work specifically with dpms lr. unless i have a defective batch. so what i did. i sacrificed one pmag by shaving material off the follower and guess what, it worked. i went to the range and the rifle functioned like it supposed to. i tried the dpms mag and it didn't work. it is garbage. so do i alter every mag i have ? Quote Link to comment Share on other sites More sharing options...
dtom Posted September 6, 2016 Author Report Share Posted September 6, 2016 or maybe replace the bolt catcher to some other one? Quote Link to comment Share on other sites More sharing options...
survivalshop Posted September 6, 2016 Report Share Posted September 6, 2016 Just so I understand this , you must have shaved material off the Follower , for it to raise higher in the Mag. Body ? What Generation PMag is your mag. ? Why or how didn't the DPMS Mag not work ? Quote Link to comment Share on other sites More sharing options...
dtom Posted September 6, 2016 Author Report Share Posted September 6, 2016 correct. so the follower rises a little higher in the mag body. gen 3 the follower won't rise high enough to engage with the bolt catcher. i just got off the phone with magpul. the tech said g2 dpms rifles are not compatible with pmags gen3. thats the only flaw. he said that dpms might have a fix.. Quote Link to comment Share on other sites More sharing options...
COBrien Posted September 6, 2016 Report Share Posted September 6, 2016 Sadly, DPMS's fix is going to be "Don't use PMags." If your rifle won't even function with the DPMS mag, something's wrong. Quote Link to comment Share on other sites More sharing options...
dtom Posted September 6, 2016 Author Report Share Posted September 6, 2016 i just got off the phone with dpms. the guy said pmags gen 1 & 2 work fine. gen 3 however the design was changed on the follower. it doesn't have enough material to engage the bolt catcher.. according to him, magpul is working with dpms on a fix. keep in mind this issue is only with gen 2 dpms rifles. so i will wait for the fix and for the time being i will just manually pull the charging handle between magazines.. Quote Link to comment Share on other sites More sharing options...
mrmackc Posted September 6, 2016 Report Share Posted September 6, 2016 I rarely shoot a mag till it is empty, learned that with my M1, didn't always want to hear that ping! when it kicked the empty clip out, where some hostile may be listening for it. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted September 6, 2016 Report Share Posted September 6, 2016 There was never a "Gen 1" LR20 308 PMAG. The 5.56 Gen 2 was already out before MagPul made a mag for the 308, so all original LR20 308 PMAGs started out with the Gen 2 technology. The guy at DPMS may not know that, or he's bullshitting you. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted September 6, 2016 Report Share Posted September 6, 2016 (edited) If you want that rifle to function properly , spend the $$ on some L7 Lancers or fix,alter the DPMS Mag , I have many DPMS that work just fine & haven't needed any alteration , you may just have a bad Mag.. Below is some info from another thread that has a loose fitment on the Receivers & his Bolt Catch is not engaging also , it shows the height the BC is pushed up with different mags with one of my DPMS LR 308 AR rifles . His was lifting the BC up 0.42" , it doesn't take much to make them work or have an issue . Ok , this readings are off my DPMS Lower , both of mine are DPMS LR's so I only did the one closest in the safe CProducts ( org. ) 0.455" Lancer L7 0.540" DPMS 0.540" PMag ( org. ) 0.495" PMag Gen 3 0. 473" What Mag brand are you using ? It might be a Brand issue , I had a early CMMG Billet Lower Build that worked with any Steel mag, but not the org. PMag . When the Gen 3 PMag came out it worked fine in the rifle , as did the Lancer . https://forum.308ar.com/topic/13447-take-down-pin-problem/?page=2 Edited September 6, 2016 by survivalshop Quote Link to comment Share on other sites More sharing options...
dtom Posted October 5, 2016 Author Report Share Posted October 5, 2016 just wanted to close this thread. after ton of research, help from this forum and going back forth with my gunsmith and of course dpms, I pretty much figured what my problem was. PMAG GEN 3 don't function properly in the DPMS G2 platform. I found this local gun shop who still carries the old PMAG with the black follower for 22$ and guess what, it functions flawlessly. the rifle cycles properly and locks with the last round. i couldn't be happier. i bought 10 pmags from him and tested everyone. no problem at all. that's the story if people want to use magpul mags in the G2 platform. the PMAG G3 no GOOD. Until we wait for the fix from magpul because DPMS are not going to alter their design to work with magpul obviously. OR some aftermarket company redesigns the bolt catcher for the G2 platform... thank you all Quote Link to comment Share on other sites More sharing options...
shepp Posted October 5, 2016 Report Share Posted October 5, 2016 57 minutes ago, dtom said: just wanted to close this thread. after ton of research, help from this forum and going back forth with my gunsmith and of course dpms, I pretty much figured what my problem was. PMAG GEN 3 don't function properly in the DPMS G2 platform. I found this local gun shop who still carries the old PMAG with the black follower for 22$ and guess what, it functions flawlessly. the rifle cycles properly and locks with the last round. i couldn't be happier. i bought 10 pmags from him and tested everyone. no problem at all. that's the story if people want to use magpul mags in the G2 platform. the PMAG G3 no GOOD. Until we wait for the fix from magpul because DPMS are not going to alter their design to work with magpul obviously. OR some aftermarket company redesigns the bolt catcher for the G2 platform... thank you all GOOD to hear happy you got it figured out Quote Link to comment Share on other sites More sharing options...
survivalshop Posted October 5, 2016 Report Share Posted October 5, 2016 I think a redesign of the Bolt Catch would be easy ,it has a stop built into it , so it would negate any over travel , with other Mag brands . Quote Link to comment Share on other sites More sharing options...
dtom Posted October 5, 2016 Author Report Share Posted October 5, 2016 agreed!! Quote Link to comment Share on other sites More sharing options...
washguy Posted October 5, 2016 Report Share Posted October 5, 2016 On 9/6/2016 at 11:38 AM, dtom said: correct. so the follower rises a little higher in the mag body. gen 3 the follower won't rise high enough to engage with the bolt catcher. i just got off the phone with magpul. the tech said g2 dpms rifles are not compatible with pmags gen3. thats the only flaw. he said that dpms might have a fix.. DTom heres the fix for gen3 mags and gen2 rifles Wash http://forums.brianenos.com/index.php?/topic/201651-guide-to-modifying-308-gen3-p-mags-to-work-in-dpms-g2/ Quote Link to comment Share on other sites More sharing options...
survivalshop Posted October 5, 2016 Report Share Posted October 5, 2016 16 minutes ago, washguy said: DTom heres the fix for gen3 mags and gen2 rifles Wash http://forums.brianenos.com/index.php?/topic/201651-guide-to-modifying-308-gen3-p-mags-to-work-in-dpms-g2/ Ya , use the first Gen. LR PMags with what the one guy called ' with junky followers" or Lancer L7's & there is not an issue . Junky followers , really , I have a bunch of those LR PMags with those Junky Follows, new in the wrapper , if one of you G2 owners want to trade for new Gen. three's Quote Link to comment Share on other sites More sharing options...
Mikehoncho Posted February 23, 2020 Report Share Posted February 23, 2020 Same thing happened to me. Just keep firing the MF and she’ll buff out buddy of mine had same problems with his gen 1 and I’ll mag dump 150g fmj to play with and black hill 165g to hunt with so just shoot the hell out that mf mags don’t matter either I’ve got magpul and metal mags dropped in the mud slapped back in and no problems. Quote Link to comment Share on other sites More sharing options...
strikeu Posted July 18, 2020 Report Share Posted July 18, 2020 followed this post all the way through. I had same problem almost exactly. used these mags: https://www.cheaperthandirt.com/duramag-by-c-products-defense-dpms-lr308-pattern-magazine-.308-20-rounds-stainless-steel-black-2008041185cpd/FC-766897411298.html couldn't figure out why feeding was messed up. finally the one guy who said clean, lube extra, fire 10rds, repeat for 5 times...something like that. worked like a charm. these guns don't work well real dry. I had extra oil on the BCG, cleaned the spring, cleaned the feedramp, 50 rds flawlessly.. needs lubrication. Quote Link to comment Share on other sites More sharing options...
Ray Posted February 2, 2021 Report Share Posted February 2, 2021 I use PMAGS in mine and they perform better than the DPMS mags. I'm wondering if the buffer spring can be lightened. Quote Link to comment Share on other sites More sharing options...
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