delete this thread

[goawayleftwing]

delete this thread

[Corbin Dallas]

In short. No.

Slamfire is possible.

[bubbapug1]

No they can't. You have a trigger issue

[Rimack]

I vote slam fire.

Your primers are probably too soft, try a military primer.

CCI #41 for example.

[bsumoba]

^ probably this, especially if its not doing it with factory ammo.

what primers are you using?

could also be that the primers aren't seated all the way, which would help cause slam fires as well.

[goawayleftwing]

I am using CCI 400 and seems like a lot of guys stay away from those for semi autos.. The primers seem to be seated correctly but I will recheck. I mean don't get me wrong, it was fun but I would have liked a heads up thats all.. If the disconnector wasn't catching the hammer on a hot load would it have enough energy to light it off when it followed it forward?

[Arcaporale]

I am using CCI 400 and seems like a lot of guys stay away from those for semi autos.. The primers seem to be seated correctly but I will recheck. I mean don't get me wrong, it was fun but I would have liked a heads up thats all.. If the disconnector wasn't catching the hammer on a hot load would it have enough energy to light it off when it followed it forward?

1. Check your primers make sure they are seated below flush.

2. Clean your weapon, especially chamber, bolt and bolt face. Make sure your firing pin isn't all gunked up and has lube.

3. Check your disconnect spring. Make sure it's there in one piece, installed correctly. Make sure it's the right spring. I've seen factory rifles and home builds with incorrect springs installed.

4. Try different primers, I've ran a many different primers including CCI 400 and federals which are notoriously soft in my ar without a problem. I would check all the above scenarios before determining its a primer issue.


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[tiller]

1. Check your primers make sure they are seated below flush.

2. Clean your weapon, especially chamber, bolt and bolt face. Make sure your firing pin isn't all gunked up and has lube.

3. Check your disconnect spring. Make sure it's there in one piece, installed correctly. Make sure it's the right spring. I've seen factory rifles and home builds with incorrect springs installed.

4. Try different primers, I've ran a many different primers including CCI 400 and federals which are notoriously soft in my ar without a problem. I would check all the above scenarios before determining its a primer issue.


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This^^

I would say weapon before ammo... By chance does it have a timney in it? Ive seen this same problem happen with them

[cgiomi]

Was work done on your trigger? Sounds like a disconnect concern.

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[budah1999]

I use CCI 400 primers in my AR, I never had any issues with slam firing. How hot did you make your rounds?

[MR_X]

I have used CCI 400 also and I have feed 2 rounds that I know the primers were not seating all the way (feed them manually one by one). I was specting slam fire but they didn't go as I let the bolt go home at full force.

Not saying it isn't the issue though but I would inspect your trigger.

[XxWoodsHunterxX]

Too heavy if a buffer causing BCG to not to go back far enough? Could that cause this or no.

[jaymz]

Trigger pin holes drilled too far apart causing poor disconnect engagement. Combined with hot loads, it's likely you're bump firing.

[NiMiK]

Sounds like a disconnect issue. I've ran into that and replaced it with a spare. Problem never happened after that.

[3RDGEARGRNDRR]

Trigger issue. Either you drilled your holes slightly too far apart and /or poor finger control causing bump fires