Question on an AR10

[Jason Fedeli]

It is inertia. When the butt of the gun is hit on the ground,the BCG moves to the rear just enough to take it off the bolt catch (hold open). The bolt catch retracts and the BCG slams into battery (closes).
We used to do this with some of our guns. I did it with my XM177E2 or M16 back in the day.
*Pull charging handle to the rear and engauge bolt hold open (bolt catch).
*Close charging handle.
*Close ejection port cover
*Safety on safe (or fire).
You could either tap the butt of the gun on the ground or hit it with to heel of your hand and the BCG would slam forward.
CAUTION: I am not endorsing this practice for the civilian environment or even members of the military. --- SAWMAN

Thanks a lot. I wonder why some do and some don’t. But I’m glad it’s normal


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[SAWMAN]

Put a very small drop of heavy oil on the bolt hold open spring and swivel point. Work it 20 times or so. There should be a clear and fast "snap" to it when you slide your thumb off of it. --- SAWMAN

[Jason Fedeli]

Put a very small drop of heavy oil on the bolt hold open spring and swivel point. Work it 20 times or so. There should be a clear and fast "snap" to it when you slide your thumb off of it. --- SAWMAN

I’ll try that. Thanks for the tip. I never even thought of lubeing that before


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[Muddydawg75]

Put a very small drop of heavy oil on the bolt hold open spring and swivel point. Work it 20 times or so. There should be a clear and fast "snap" to it when you slide your thumb off of it. --- SAWMAN

That was part of what I was saying, if the plunger sticks, then you don’t get max spring to the catch.


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