tayronachan Posted March 14, 2014 Report Share Posted March 14, 2014 (edited) Stock two stage trigger from DPMS. Came out of a LR-308. This is the second trigger in this rifle from DPMS that failed. I'll be sending this back for a new trigger. I'm thinking of buying a backup trigger, and I want to keep the price around $100.00. I'm thinking of the following from Midwayusa Del-Ton Two Stage Combat Trigger Assembly AR-15, AR-10, LR-308 Small Pin .154" Matte . Any other suggestions? But, I would like you guys to take a look at the two faces of the broken parts and tell me what you see. Thanks in advance. Edited March 14, 2014 by tayronachan Quote Link to comment Share on other sites More sharing options...
shibiwan Posted March 14, 2014 Report Share Posted March 14, 2014 Metal fatigue? The steel was probably not annealed correctly and thus brittle. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 14, 2014 Report Share Posted March 14, 2014 I'm thinking of buying a backup trigger, and I want to keep the price around $100.00. I'm thinking of the following from Midwayusa Del-Ton Two Stage Combat Trigger Assembly AR-15, AR-10, LR-308 Small Pin .154" Matte . Any other suggestions? Yeah, one more suggestion. Spend twice that $100.00 you planned, and get a Geissele SSA. It won't break. As the saying goes, "Buy once, Cry once..." That's the SECOND DPMS two-stage that's failed on you?... Quote Link to comment Share on other sites More sharing options...
Ben Diss Posted March 14, 2014 Report Share Posted March 14, 2014 Fkn MIM parts suck balls. Buddy had a bunch of problems with MIM parts in a Springfield 1911. I've got an ALG ACT trigger ($65) in a couple guns and I really like it. Check it out. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 14, 2014 Report Share Posted March 14, 2014 The ALG ACT is a very, very worthy trigger - but it's not a 2-stage. If the OP is set on a two stage, there's the Geissele route he can take, or just get the Armalite 2-stage national Match trigger... It's definitely worth the money, and won't bust up on him. My info on the Geissele triggers is all over this site. Here's me review on the Armalite 2-stage National Match: Quote Link to comment Share on other sites More sharing options...
shibiwan Posted March 14, 2014 Report Share Posted March 14, 2014 SSA-E - definitely. What was surprising to me was the New Frontier's all-plastic fire control... clean crisp break, no grinding or grittiness at all. Totally baffled me. Quote Link to comment Share on other sites More sharing options...
mineralman55 Posted March 14, 2014 Report Share Posted March 14, 2014 How many rounds? What are you shooting? Are they hot handloads or commercial rounds? Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted March 14, 2014 Report Share Posted March 14, 2014 Ever see the video of stomping on Ruger's polymer trigger group? Stuff is strong. Quote Link to comment Share on other sites More sharing options...
Magwa Posted March 14, 2014 Report Share Posted March 14, 2014 did that hammer bust on a dry fire or a live fire? Quote Link to comment Share on other sites More sharing options...
survivalshop Posted March 14, 2014 Report Share Posted March 14, 2014 I also want to know if both (you say triggers failed ? ), but photo's show Hammer failure ? Quote Link to comment Share on other sites More sharing options...
Toolndie7 Posted March 14, 2014 Report Share Posted March 14, 2014 My guess is that hammer has been fractured for a little while before it broke. You can see the fresh break line and then where its dirty from oil that had seeped into the crack. Quote Link to comment Share on other sites More sharing options...
Dane Armory Posted March 14, 2014 Report Share Posted March 14, 2014 Bad angles during impact would cause early metal fatigue. I have some nylon "speed" hammers to be used for pistol caliber ARs which are tuff and very lightweight. They work pretty good. Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted March 14, 2014 Report Share Posted March 14, 2014 A different beast but my Marlin 795 has a plastic hammer of some sort…and a helluva spring on it! Several bricks of ammo and still going strong. Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted March 14, 2014 Report Share Posted March 14, 2014 I'm thinking of buying a backup trigger, and I want to keep the price around $100.00.Stretch that $100 a bit and pick up a Geissele G2S, you won't regret it. Quote Link to comment Share on other sites More sharing options...
tayronachan Posted March 15, 2014 Author Report Share Posted March 15, 2014 Metal fatigue? The steel was probably not annealed correctly and thus brittle. It looked to me like it was already cracked when I got it. Why else would it have a bright and shinny surface on one side that looks like a fresh break, and what looks like a coated/dull surface on the other? There were no more than 30 rds on this trigger. These are reloads; 42gr, 4895 IMR, 150gr FMJ-BT Hornady, 1 MOA. Don't think that's hot, no over pressure signs. Comments? It broke on a dry fire. Trigger before this one was two stage, came with the gun, and when new had a nice clean break. The break disappeared completely. Was looking at, or "feeling", a single stage trigger at a local shop today, might go with that. Quote Link to comment Share on other sites More sharing options...
shibiwan Posted March 15, 2014 Report Share Posted March 15, 2014 That's awesome QC. Kinda scary. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted March 15, 2014 Report Share Posted March 15, 2014 DPMS probably doesn't make there Fire Control Groups. There are a lot of trigger systems out there ,but if your rifle can be repaired by DPMS under warranty , at no cost to you , I would send it back with a detailed letter how you are not pleased with two FCG 's that broke , with such a low round count . You can always get another trigger system for a spare ,but they should repair it & there are a lot of DPMS rifles out there working just fine with there FCG's in them .There also can be a problem with a production run of there supplied FCG's. If it broke off completely when dry firing , I can't see the problem being any thing but the FCG or it just picked that time to let go . There also could be a problem with interference some where in the FCG that is putting excessive pressure on the Hammer during cycling when fired ( like the Hammer hitting the Disconnector ). Also a good reason to send it back to them . Quote Link to comment Share on other sites More sharing options...
tayronachan Posted March 15, 2014 Author Report Share Posted March 15, 2014 but if your rifle can be repaired by DPMS under warranty , at no cost to you DPMS didn't blink and eye when I asked them to replace the first FCG. They were real good about it. They told me to send in just the FCG. I'm sure they'll replace this one too. That hammer looks like it was already fractured when I got it. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted March 16, 2014 Report Share Posted March 16, 2014 I would send the rifle to them , with the FCG (broken ) in it . Call them & See if they will give you a shipping return label , good luck with that , but you never know . You shouldn't have to replace the FCG every hundred rounds . Quote Link to comment Share on other sites More sharing options...
tayronachan Posted March 16, 2014 Author Report Share Posted March 16, 2014 Stretch that $100 a bit and pick up a Geissele G2S, you won't regret it. ey, thx for the link. Quote Link to comment Share on other sites More sharing options...
tayronachan Posted March 16, 2014 Author Report Share Posted March 16, 2014 My guess is that hammer has been fractured for a little while before it broke. You can see the fresh break line and then where its dirty from oil that had seeped into the crack. I think so too. Quote Link to comment Share on other sites More sharing options...
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