Roll Pin
- Thread starter Caboose
- Start date
Turns out the hole was only drilled out to about 0.054". I found this by using my smallest drill bits like a feeler gauge. Rather than drilling out the hardened bolt with Bubba like results, I just enlarged the gap in the roll pin so it could compress more. Seems to be in there ok???
The ejector on an AR15 should be held in place by an actual ROLL PIN, not a slotted tension pin as you've described and applied to your bolt.
Using drill bits to establish measurements is close, but you should always use the exact size pin and metalurgy specified for your firearm. A little thing like this can cause you major grief when your gun stops functioning properly.
Regards.
Using drill bits to establish measurements is close, but you should always use the exact size pin and metalurgy specified for your firearm. A little thing like this can cause you major grief when your gun stops functioning properly.
Regards.
Roll pins and Spring pins are the same thing in my book. What's supposed to hold the pin in place if there is no tension?
http://www.engineersedge.com/roll_pin.htm
http://www.engineersedge.com/roll_pin.htm
A roll pin technically is made of steel rolled round and round like a tootsie roll and does not have a gap. A split pin is just that, rolled nearly all the way around with a split (or gap) in it.
AR15/M16 etc ejectors have split pins in them, the tension outwards in the hole they are in holds them in. I have never seen anything else but a SPLIT pin in the numerous guns I have seen including Colt, Diemaco (Colt Canada), Bushmaster etc.
AR15/M16 etc ejectors have split pins in them, the tension outwards in the hole they are in holds them in. I have never seen anything else but a SPLIT pin in the numerous guns I have seen including Colt, Diemaco (Colt Canada), Bushmaster etc.
I am not sure about Diemaco, but both my Colt extractor and Bushmaster extractor have solid pins in them, not a roll pin or split pin.
Both bolts/extractors are unmolested and came from the factory this way.
The Bushmaster is brand new.
The pin is held in place by the spring tension of the extractor and its movement is limited by the bore of the carrier. There is no way it can come out while in the carrier.
Both bolts/extractors are unmolested and came from the factory this way.
The Bushmaster is brand new.
The pin is held in place by the spring tension of the extractor and its movement is limited by the bore of the carrier. There is no way it can come out while in the carrier.
Yah, I think there is some confusion here. The extractor pivot pin is what I was talking about. It is solid.
The ejector pin, in the face of the bolt, is also solid in both my Colt and Bushmaster. Arwen, is this what you mean by ejector pin?
In summation - I have ONLY solid pins in my bolts.
The ejector pin, in the face of the bolt, is also solid in both my Colt and Bushmaster. Arwen, is this what you mean by ejector pin?
In summation - I have ONLY solid pins in my bolts.
The ejector is the solid pin with a slot cut in it. The slot is where the ejector retaining pin does through to keep it in. This is the split pin that is 1/16" in diameter.
I think everyone is on the right track now, it was communication of course!
AA
I think everyone is on the right track now, it was communication of course!
AA
