My Maadi "ARM" 'AK's non-matching trunnion.

[Ignition Override]

Despite the different "OK ****" serial on the left side of the action, Luckily the bolt serial Does match the bolt carrier.

The previous owner fired some rounds and allowed me to fire a dozen rds. before I bought it last month. With my three SKS, Enfields and Spanish FR8s, I Always looked for matching bolts before purchase, but quite frankly, this time I forgot about any potential problem, especially hearing about the gun's operation and trying it out. 'Several' boxes of ammo have been used even After I bought it. Everything seems normal.

The main question here: Weren't the original bolt carriers swapped for a US-made bolt carrier with Matching bolt (to help comply with 922r parts...) followed by a careful check of the head space, and adjustments always made if required,
before initial distribution inside the US? Maybe this was standard procedure on post-ban AK clones....

Note that it is a Maadi "ARM", and not a MISR 90.

 

[Ignition Override]

Finally checked the ejected steel "Wolf" cases today.

They looked normal, from the seated primers to the neck.

 

[RC20]

Can't help as this is the wrong group and possibly wrong forum.

This is bolt action and pump. Semi auto at least and maybe better info at the AK Forum.

 

[kozak6]

Nah, bolts and carriers aren't used as 922r parts since they are generally importable, and because they are too expensive to make.

 

[RC20]

I believe that is correct.

Pistons yes

 

[drobs]

+1 to what Kozak said.

 

[SR420]

RC20 nailed it.