1911 Ejector pin....solid vs split roll pin type

[mtenenhaus]

Hi, wondering which is preferred (and why?)....a solid pin vs the split roll pin type for a 1911 Ejector Pin.
Thank you

[ar15barrels]

I prefer a spring pin because it holds itself in place in a drilled hole.
A solid pin the correct size for a 1911 ejector requires much more precise fitting (think reamer) to get the hole the correct size that the pin will fit snugly without being so tight that the pin could possibly be broken during installation.
If you go oversized with a drill bit, a solid pin will be a slip fit and can walk back and forth in the hole, only being captured by the slide.

[mtenenhaus]

thank you as always, very much appreciated, i'll order a spring pin

[ar15barrels]

I have had 1911's through my shop where the solid pin falls out when you pull the slide off.
You have to keep track of that and put the pin back in just before you put the slide back on for the last time or the ejector is going to walk out in use.
The fix is to install a spring pin that will stay put.

[CifaldiPrecision]

I prefer a spring pin because it holds itself in place in a drilled hole.
A solid pin the correct size for a 1911 ejector requires much more precise fitting (think reamer) to get the hole the correct size that the pin will fit snugly without being so tight that the pin could possibly be broken during installation.
If you go oversized with a drill bit, a solid pin will be a slip fit and can walk back and forth in the hole, only being captured by the slide.

This, 100% dead on.


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[sonofeugene]

Before you install the roll pin, dress down the edge at the 45 degree chamfer at both ends. The chamfer gets rid of the otherwise sharp 90 degree angle, but then you're left with a sharp 45 degree edge that can still dig into the hole walls as the pin is pushed in. Better to break the edge further with a fine stone, or even polish it a bit before installing the pin.

[mtenenhaus]

thanks everyone. appreciate the help.