mak 90 and the nhm91


January 23, 2013, 05:27 PM
hi i have some questions i hope someone can help answer them i recently bought a norinco nhm91 and the bolt has pretty much seized i can get the rataining pin out too remove the firing pin which needs to be replaced it looks like the tip broke off it all orginaly started when i went too the range the other day got maybe 10 rounds through her and then CLICK CLICK CLICK CLICK no primer marks or strikers the firing pin had just seized in there so i was wondering if the mak 90 and the nhm91 have the same reciever thickness cuse the nhm91 has a 1.5mm reviecer were as so many others have a reciever and i am considering a new bolt at this point just too have around at the very worst case butttt its gotta be one for that 1.6mm reciever i found a bolt for the mak 90 rifles but its 230 bucks so i wanna make sure it will be compatiable annd another thing rpk rifles? anyone no how thick there recievers were? cayse this nhm91 is pretty much a civilionized rpk from what ive read so maybe there a cheaper bolt out there from an rpk?? any tips info or help would be amazing thank

would the Original Polytech complete bolt imported 1989 fully assembled bolt work? and is it the only one that would cause its for the mak 90s? i just could really use some info cause this bolt costs 230 flippin dollars :/ any help would be appreciated thank you

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January 24, 2013, 11:32 AM
nobody has any tips or advice on this one? come onnn? lol

Carne Frio
January 24, 2013, 12:47 PM
I don't know. All of the chinese stamped receivers are 1.5mm.
This site will have your answer and maybe even the parts that
you will need.

Here is a thread on another ak forum, discussing this topic:

January 24, 2013, 07:48 PM
longest run on sentence ever.

January 24, 2013, 11:22 PM
ok cool thank you so much! and not trying too be rude but i aint looking for a grammer lesson or someone to point out the fact i dont use proper punctuation i relize this its something i aint ever been bery good at but none the less if you've got information you'd like sharing please do i could use all the help i can get on this one

January 24, 2013, 11:26 PM
If the bolt is seized it's probably jumped the rails and has wedged against the rear trunion and rails. The other option is a broken pin or hammer.

Got any pics with the cover off?

Polytech in Atlanta is your best source for a bolt or firing pin.

January 24, 2013, 11:33 PM
polytech is what im looking at they got a 1989 bolt with firing pin and everything for 230 bucks and i have the bolt out of the reciever i been trying too remove its retaining pin so i can remove the firing pin and inspect it and clean the bolt up good cause the bolt and firing pin have jammed up the rest of the rifle works and operates normally but my bolt pooped out on me so im trying too figure out if theres a cheaper route of fixing it or if the 230 dollar bolt is gonna be like my only means of it ya no

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