Small Brass Part ID

[Toestr]

I got this part in a lot with a project Autococker (Sniper 3 body).

It came in a baggie with barbs and brass hose locks so initially I thought it was a 3 way coupler or something, but it has no threading in it.

Someone suggested it might be a part of the IVG (sleeved Sheridan style spring). But I don't know how it would fit in other than maybe being a shim?

Any thoughts?

[Ecapnation]

Not anything from a sniper 3 or cocker.

[k_obeastly]

looks like A/T collars that would go on the pump rod but with the threads drilled out.

[grendal50]

Something to slide in the valve to de-volumize it? For better efficiency on 12g's, maybe......

[Toestr]

Both the AT part and devolumizer are very good thoughts. Here's it on the pump arm and in the front part of the valve. In the valve it blocks the banjo bolt from fully threading in by a couple turns but that might be solved with a pump guide?

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