AXMC Safety Problem

[LemonFresh]

Does anyone have problems switching the safeties on AXMCs when swapping bolt bodies?

I just picked up a 308 bolt body and I can't put the safety into the first position. It's kind of a problem because you need to put the safety into the middle position in order to swap bolt bodies.

The safety works just fine on my 338 bolt assembly, it's just the 308 that has this problem.

 

[redneckbmxer24]

The safety is all contained in bolt shroud assembly and should have nothing to do with the bolt body. Measure your firing pin hole and firing pin to be sure you didn’t somehow get a SFP bolt body. That would definitely block the safety from releasing the pin and going forward.

 

[LemonFresh]

The pin has no problem going forward, the firing pin drops perfectly on the 308 bolt body.

 

[trophyhunter]

The issue is with a slight variance in bolt lugs.

try this, gently push the problem bolt assembly in closing the gap between the bolt shroud & receiver, then throw the safety.

the little nipple on the firing pin assembly isn’t being pressed all the way and not allowing the safety mechanism to engage.

 

[Huskydriver]

The issue is with a slight variance in bolt lugs.

try this, gently push the problem bolt assembly in closing the gap between the bolt shroud & receiver, then throw the safety.

the little nipple on the firing pin assembly isn’t being pressed all the way and not allowing the safety mechanism to engage.

Would be my guess also

 

[LemonFresh]

The issue is with a slight variance in bolt lugs.

try this, gently push the problem bolt assembly in closing the gap between the bolt shroud & receiver, then throw the safety.

the little nipple on the firing pin assembly isn’t being pressed all the way and not allowing the safety mechanism to engage.

There's like absolutely no play in the bolt shroud, I tried pushing the shroud towards the receiver, no luck.

 

[trophyhunter]

There's like absolutely no play in the bolt shroud, I tried pushing the shroud towards the receiver, no luck.

Huh , It should have some inward travel, or the cocking piece wouldn’t work.
With the bolt assembly removed. Drop the firing pin, gotta depress the side plunger and let the firing come off the cocking notch on bolt.
Then find a firm straight surface. Put the edge of the cocking sear on edge and with a pulling motion to basically cock trigger and engage safety.

what needs to happen is the flat block on bottom of cocking piece has to be back far enough for that plunger, safety mechanism to line up.

what trigger do you have ?

 

[LemonFresh]

It's just a stock AI trigger.

I can put the safety on once I've pushed the firing pin up to relieve the pressure, and that's how I've been able to swap bolts again.

What I'm thinking is happening is something with the 308 bolt geometry is not pushing the firing pin back enough for the 1st position safety to engage. I think the trigger sear (mechanism, whatever) is too far forward so when you put the bolt on fire, in order to put back on safe, you have the entire weight of the firing pin spring to overcome. I don't really want to test this theory as the safety selector is already flexing when I try to put it on safe.

I contacted AI service at Mile High, apparently I need to send the rifle in to get the bolts fitted, which is kind of annoying, I figured most of these parts were drop in.

 

[trophyhunter]

Ya they want the rifle to diagnose the issue.

I’ve had that on a few of mine. For me I would push the firing pin assembly in just a tad and that was enough to relieve enough pressure on cocking piece to set safety.

my best guess why is a slight burr that forms on the piece that connects to the safety in the safety housing.

mile high will get it figured out.