I bought a BCG and the firing pin moves back and forth at least ½ an inch. Is this normal for a BCG?
I own BCM, Spikes, and YHM BCGs and never seen this much movement before.
Should i return it or is it GTG?
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I bought a BCG and the firing pin moves back and forth at least ½ an inch. Is this normal for a BCG?
I own BCM, Spikes, and YHM BCGs and never seen this much movement before.
Should i return it or is it GTG?
Completely normal.
Half inch? Got a pic of the firing pin? There's roughly a half inch between the head and the spool on the firing pin.... so as long as it's the right pin and the cotter pin is holding it in place, you should be fine.
"You people have too much time on your hands." - scottryan
If it doesn't move back and forth, how do you expect it to strike the primer after the hammer strikes it?
On second thought.... the critical item here would be the placement of the firing pin retaining pin. If, for some reason, the hole where you insert the retaining pin was positioned back from the bolt more than your other BCGs, you'd get excessive pin float.
Can you place this BCG by another one... maybe standing on end... and compare the position of the retaining pin hole??
"You people have too much time on your hands." - scottryan
That's true too. But I think the bolt tail will limit the forward movement too. Occam's razor would suggest that if there's a problem, the pin hole location would be the issue.![]()
"You people have too much time on your hands." - scottryan
Maybe I'm misunderstanding your meaning. The rear bore of the carrier does limit how far forward the pin can move. The firing pin can move forward until the large diameter of its tail bottoms out in the rear bore.
At any rate, if the rear bore were too deep the hammer wouldn't stay in contact with the firing pin as it struck the primer and you'd basically be relying on firing pin momentum to ignite the primer. 1/2" seems excessive to me.
Another thought: If the rear bore was deep enough to allow firing protrusion with the bolt unlocked there would be a complete thru-hole down the carrier; the firing pin would be able to fall through of the front of the carrier with the bolt removed.
B.A.S. Mechanical Engineering Technology
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