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[Marcus von W.]

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[Aaron707]

I would go with an oversize barrel pin and reamer. Ak Builder has them here:

http://ak-builder.com/index.php?dispatch=categories.view&category_id=226

[kcstott]

the best way is to open the hole up with an endmill in a milling machine. as to prevent the larger drill and reamer from following the fouled up hole.

then drill and ream over size

[p220nut]

the best way is to open the hole up with an endmill in a milling machine. as to prevent the larger drill and reamer from following the fouled up hole.

then drill and ream over size

+1^^^ This

[Hoshnasi]

Here's the deal - I recently purchased a nice 1970 Tula AKM kit. Bolt and carrier, gas tube, and top cover all match...but it's one of those mixed parts ones that has the wrong front trunnion, which is 1969 Izhevsk.

I have located a 1970 Tula trunnion that even has the same Cyrillic letter serial number prefix - not an easy part to find even for year and arsenal, but especially one with the same prefix.

The problem: during demill/barrel pin removal, someone egged out the barrel pin hole on the left side of the trunnion. The hole on the right side looks o.k.

It has been suggested that this trunnion can be saved and used, but that it would need an oversized barrel pin.

What would be involved in doing this? Any opinions, information, or tips on this, based on actual experience or general AK builder knowledge?

Plan right now is to build this rifle up using one of my Polish AKM barrels, and one of the fully heat-treated and hardened Polish 80% receivers I got from Cameron "The Dark Knight" Childers at Childers Guns.

I acknowledge how difficult the trunion is to find, but I would probably just buy another one that would work and use that.

[ar15barrels]

the best way is to open the hole up with an endmill in a milling machine. as to prevent the larger drill and reamer from following the fouled up hole.

then drill and ream over size

Reaming Speed!!!!!!!!

[kcstott]

it ain't that trunnions are hard to find. it's that they are hard to find and damn expensive. $150 for a single trunnion of any make??? hell no fix what you got.

If you are worried about doing it right. I'm sure Randal, Nicoroshi, or I could fix it for a few bucks. If you don't have access to good tooling I'd recommend sending it out to be done correctly

[AKSOG]

it ain't that trunnions are hard to find. it's that they are hard to find and damn expensive. $150 for a single trunnion of any make??? hell no fix what you got.

If you are worried about doing it right. I'm sure Randal, Nicoroshi, or I could fix it for a few bucks. If you don't have access to good tooling I'd recommend sending it out to be done correctly

Tula trunnions are pretty difficult and expensive to get your hands on

[Paulie Lugnuts]

I would set the headspacing before doing anything else. You don't want to have to go oversized twice.