"Soft" Romanian steel?

[Brian]

Hi guys. I posted this same question in the "Romanian" and "Build it yourself" rooms, and I'll ask it again here to cover my bases.

I have a CUR 2 that has been modified to the "original" configuration using Hesse (US-made) internals. After app. 2,000 rds., I have substantial wear on the rear of the bolt carrier, bolt stem, and firing pin where they contact the hammer face. The metal has actually "mushroomed" (for lack of a better term), and one firing pin has been rendered inoperable so far. The replacement firing pin is likewise being "flattened."

I defer to the forum's expertise. What do you guys think? Is this the result of improperly hardened Romanian components, overly-hard US components, or does it have something to do with the mass, shape, or contact position of the US internals?

What's the best remedy...where should I begin?

Thanks guys.

[Sutro]

There's a post on the Robinson Arms page at the Brand X AK site that I think answers your question: Robinson Arms reports that they tested a number of USA-made internals and found that many were excessively hardened. Said that excessively hardened internals would result in precisely the symptoms you describe. So I think replacing the hammer with one that has been properly hardened would fix your problem.

[Brian]

Thanks a bunch Sutro. Do you have a link to that site, or an addy?

[Hang-Fire]

Can't someone make parts right? Too soft, too hard, geez! That's beginning to happen to my bolt as well using an FSE hammer. I'm wondering where to look for a proper hammer and trigger set to use.

[Sutro]

The Romanians know how to make hammers for Romanian guns. I believe that both Century and Tennessee Guns sell Romanian fire-control sets, and I bought a Romanian fire-control set from a fellow on this forum who goes by "TMAN". TMAN also has/had sets modified to fit the SAR-3 to resolve that guns notorious hammer problems.