Wahoo72 Posted October 30, 2017 Share Posted October 30, 2017 I am having issues with the Geissele Super Dynamic 3 Gun Trigger. When I start to pick up the pace on my trigger pull roughly every 10th pull or so it has a 3-5 round burst and sounds like it went full auto. Anyone else having this issue? Im thinking of getting a whole new trigger and just getting rid of this one. Any advice would be appreciated. Link to comment Share on other sites More sharing options...
Nathanb Posted October 30, 2017 Share Posted October 30, 2017 Call them up. They’ll take care of it. Mine is flawless. What springs are you running? Link to comment Share on other sites More sharing options...
Wahoo72 Posted October 30, 2017 Author Share Posted October 30, 2017 Thanks, I'll give them a call. I'm running the heavier spring right now. Link to comment Share on other sites More sharing options...
The Donald Posted October 30, 2017 Share Posted October 30, 2017 What ammo are you running. If you reload what primers? I had the same thing happen, was soft rifle primers. Link to comment Share on other sites More sharing options...
Wahoo72 Posted October 30, 2017 Author Share Posted October 30, 2017 13 minutes ago, The Donald said: What ammo are you running. If you reload what primers? I had the same thing happen, was soft rifle primers. I haven't gotten around to reloading for this rifle yet, this is factory ammo. I have a buddy who also had the same thing happen and he switched it out for an AR Gold trigger and loves it. Link to comment Share on other sites More sharing options...
AKJD Posted October 31, 2017 Share Posted October 31, 2017 How are you holding the gun? The very short reset on these triggers can cause them to bump fire. I had this problem when the rifle was benched but never shooting offhand. Try shooting with a firm grip pulling the gun into the shoulder firmly to see if the bursts go away. Also do a disconnector test. With lower separated pull back on the trigger and hold, cock hammer back, release trigger. Hammer should be caught by disconector. If it doesn’t you have a problem and I wouldn’t shoot the gun. Be prepared to “catch” the hammer so it doesn’t hit the front of the receiver. Repeat several times. Link to comment Share on other sites More sharing options...
Wahoo72 Posted October 31, 2017 Author Share Posted October 31, 2017 26 minutes ago, AKJD said: How are you holding the gun? The very short reset on these triggers can cause them to bump fire. I had this problem when the rifle was benched but never shooting offhand. Try shooting with a firm grip pulling the gun into the shoulder firmly to see if the bursts go away. Also do a disconnector test. With lower separated pull back on the trigger and hold, cock hammer back, release trigger. Hammer should be caught by disconector. If it doesn’t you have a problem and I wouldn’t shoot the gun. Be prepared to “catch” the hammer so it doesn’t hit the front of the receiver. Repeat several times. I hold and shoot as you describe, but I've never tried that test. I will def try that... thank you! Link to comment Share on other sites More sharing options...
reverse_edge Posted October 31, 2017 Share Posted October 31, 2017 Geissele's CS is top notch. What you're describing isn't normal. Link to comment Share on other sites More sharing options...
Wahoo72 Posted November 1, 2017 Author Share Posted November 1, 2017 I'm currently out of the country and didn't have chance to call them prior to leaving, that's on my to do list when I return. Link to comment Share on other sites More sharing options...
glock34shooter Posted November 2, 2017 Share Posted November 2, 2017 This is a bump firing issue. It is well documented over the last several years that it can happen with this trigger if you don’t have it firmly against and pulled into your shoulder. It happened to me once or twice when I first got the trigger when shooting prone. I didn’t have the gun very tight, so when fired the super short reset on the trigger allowed the gun to fire again. The trigger is NOT faulty. You will have to just hold the gun tighter when shooting it. Link to comment Share on other sites More sharing options...
reverse_edge Posted November 2, 2017 Share Posted November 2, 2017 7 hours ago, glock34shooter said: This is a bump firing issue. It is well documented over the last several years that it can happen with this trigger if you don’t have it firmly against and pulled into your shoulder. It happened to me once or twice when I first got the trigger when shooting prone. I didn’t have the gun very tight, so when fired the super short reset on the trigger allowed the gun to fire again. The trigger is NOT faulty. You will have to just hold the gun tighter when shooting it. Buddy of mine was doing some rifle shooting in an awkward position one time and didn't have the rifle shouldered very well. Let off a nice burst. Everyone at the range stopped and stared, it was kind of funny. Link to comment Share on other sites More sharing options...
Banacek Posted November 4, 2017 Share Posted November 4, 2017 On 11/1/2017 at 11:54 PM, glock34shooter said: This is a bump firing issue. It is well documented over the last several years that it can happen with this trigger if you don’t have it firmly against and pulled into your shoulder. It happened to me once or twice when I first got the trigger when shooting prone. I didn’t have the gun very tight, so when fired the super short reset on the trigger allowed the gun to fire again. The trigger is NOT faulty. You will have to just hold the gun tighter when shooting it. Good to know, I have this same trigger but have not had this issue. I have not been in an awkward shooting position and usually have a firm shoulder when firing. Does anyone know if this would get you DQed in a 3Gun match? Link to comment Share on other sites More sharing options...
1981Shooter Posted November 6, 2017 Share Posted November 6, 2017 I just picked up one of the Brownell's Rapid Fire triggers, which is basically the same as the S3G. I ran it in my 10.5" pistol this weekend and didn't have any bump fire issues, even running the lighter trigger spring. I threw my CMMG .22 conversion in it and purposely tried to get it to bump fire, but sadly was only able to get the occasional double. Link to comment Share on other sites More sharing options...
NoKimberDave Posted November 7, 2017 Share Posted November 7, 2017 Have you changed anything in the recoil/gas system? Is it possible these are slamfires? Hard to imagine 5 round bursts being from bump firing. Certainly possible if you have a wooden trigger finger I guess. Link to comment Share on other sites More sharing options...
Wahoo72 Posted November 7, 2017 Author Share Posted November 7, 2017 1 hour ago, NoKimberDave said: Have you changed anything in the recoil/gas system? Is it possible these are slamfires? Hard to imagine 5 round bursts being from bump firing. Certainly possible if you have a wooden trigger finger I guess. Not really, I have a JP barrel and gas block that is adjusted just over where it locks the bolt to the rear. Link to comment Share on other sites More sharing options...
NoKimberDave Posted November 8, 2017 Share Posted November 8, 2017 17 hours ago, Wahoo72 said: Not really, I have a JP barrel and gas block that is adjusted just over where it locks the bolt to the rear. Regular mass bcg and buffer? Just curious. Sometimes slam firing can be an issue with low mass systems and heavy firing pins. No expert here, but I have heard of it happening. I have seen triggers suffer from the problems you are having. Not Geisseles, but people have had problems with them before, returned them, got them back and had no further problems. So a bad trigger isn't out of the realm of possibility. Link to comment Share on other sites More sharing options...
Wahoo72 Posted November 14, 2017 Author Share Posted November 14, 2017 On 11/8/2017 at 10:39 AM, NoKimberDave said: Regular mass bcg and buffer? Just curious. Sometimes slam firing can be an issue with low mass systems and heavy firing pins. No expert here, but I have heard of it happening. I have seen triggers suffer from the problems you are having. Not Geisseles, but people have had problems with them before, returned them, got them back and had no further problems. So a bad trigger isn't out of the realm of possibility. Yea it's a low mass BCG and buffer. I am going to hit the range again soon to try a few things and see if I can get it "malfunction" again. If it does it again I will Call Geissele Link to comment Share on other sites More sharing options...
NoKimberDave Posted November 14, 2017 Share Posted November 14, 2017 19 hours ago, Wahoo72 said: Yea it's a low mass BCG and buffer. I am going to hit the range again soon to try a few things and see if I can get it "malfunction" again. If it does it again I will Call Geissele Are you using a titanium or lightweight firing pin? I have heard of lowmass sytems with heavy firing pins having symptoms similar to this. Might be worth checking. Link to comment Share on other sites More sharing options...
oak hill Posted November 15, 2017 Share Posted November 15, 2017 On 11/14/2017 at 2:14 PM, NoKimberDave said: Are you using a titanium or lightweight firing pin? I have heard of lowmass sytems with heavy firing pins having symptoms similar to this. Might be worth checking. Yes, you need a titanium firing pin to cure the bump fire which is actually a slam fire. Link to comment Share on other sites More sharing options...
v1911 Posted November 17, 2017 Share Posted November 17, 2017 You’ll know if it’s a slam fire issue when you drop the bolt on a fresh mag and it cooks off a round. I had that issue with an AR45. Thought it was the trigger that was doubling/tripling, until I had one light off when I closed the bolt. Ti firing line aren’t always necessary but they are a good preventive measure when running a low mass setup. Link to comment Share on other sites More sharing options...
davsco Posted March 26, 2018 Share Posted March 26, 2018 bil had the same issue yesterday, zeroing his jp ctr (with the sd3g dropped in) off a bench, occasional double tap. Link to comment Share on other sites More sharing options...
1981Shooter Posted March 26, 2018 Share Posted March 26, 2018 (edited) 2 minutes ago, davsco said: bil had the same issue yesterday, zeroing his jp ctr (with the sd3g dropped in) off a bench, occasional double tap. That's a common issue with light triggers in AR's. When zeroing you're pulling very slow and deliberately and the trigger bounces off your trigger. I've done it with my Geissele's, Hiperfire's, etc... when zeroing, but it's never happened under normal shooting conditions. Edited March 26, 2018 by 1981Shooter Link to comment Share on other sites More sharing options...
NoKimberDave Posted March 27, 2018 Share Posted March 27, 2018 I now realize I think I know this dude from local NC forums. In which case there is no way it is a shooter/bumpfire issue. He's a very experienced rifle shooter. Link to comment Share on other sites More sharing options...
bushmeat Posted April 2, 2018 Share Posted April 2, 2018 It's a known issue with the Geissele SD 3Gun trigger. Happens with some lowers, doesn't happen with others. Geissele will exchange the OP's with a new one, but if he puts it in the same lower, it might do the same thing. I would suggest asking Geissele to replace it with an SSA-E or an SD-E (flat trigger). Link to comment Share on other sites More sharing options...
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