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 Mak 90 front sight base
blasterrider88  [Member]
2/16/2010 2:00:21 PM
I am getting my first Norinco Mak 90 sporter out of lay-away at the gun shop tomorrow. Its a straight cut stamped receiver with standard wood furniture and has an ak74 type muzzle brake that I think uses a fsb pin to stay attached. I didnt think to look to see if the handguard is drilled for a cleaning rod but if it is, I want to swap the fsb for one with the part that holds the cleaning rod in. I would like to replace the gas block for one with the cleaning rod guide hole but I dont wanna mess with the gas system. Could somebody point me towards a fsb with the cleaning rod holder part? I also want the fsb to be threaded and have the spring loaded pin so I can put a slant muzzle brake on it. thanks

Is there anything else I should know about the great mak 90? Pics will be up as soon as I get the gun home and take some

By the way, the gun shop is taking my recently aquired from them problem m70ab2 in on trade in value for the mak
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POLYTHENEPAM  [Member]
2/16/2010 4:40:55 PM
Originally Posted By blasterrider88:
I also want the fsb to be threaded

I've never seen a fsb threaded 14x1. The threads are cut on the barrel.

Black-Tiger  [Team Member]
2/16/2010 4:44:37 PM
Same here; those FSBs are hard to find (the non spike-bayo FSBs); plus the ones that do have the Spike bayo in them are pricey (around $300).
blasterrider88  [Member]
2/16/2010 9:29:25 PM
I dont know what I was thinking. Of course its the barrel thats threaded. Anyway though, I want one to hold a cleaning rod and has the pin for the muzzle brake

I was hoping the fsb wouldnt cost that much. I will probably buy one if I find one but I dont know. Just the die to thread the barrel is $60
tstorm31  [Member]
2/17/2010 3:12:12 AM
Some of the bulgarian FSB's look very simmilar to the chinese. You would probably have an easier time trying to find one of those. Same with the gas block.
tstorm31  [Member]
2/17/2010 3:16:08 AM
Just the die to thread the barrel is $60

Also, you need to check the muzzle first to make sure there is enough metal to cut the threads. Some MAK's had the threads turned off and didnt leave alot of metal.
POLYTHENEPAM  [Member]
2/17/2010 8:55:31 AM
Originally Posted By tstorm31:
Some of the bulgarian FSB's look very simmilar to the chinese. You would probably have an easier time trying to find one of those. Same with the gas block.


When attempting to swap anything that's attached to the barrel remember:
1. The Chinese barrel is AK 47 profile.
2. Most countries produced rsbs, fsbs and gbs with different ids to account for variations in the diameters of the journals. IDK if the Chinese followed that practice.

blasterrider88  [Member]
2/17/2010 2:28:17 PM
The maks have heavy barrels dont they
tstorm31  [Member]
2/19/2010 3:02:11 AM
Yes, they have heavy barrels. The bulgarian fsb and gas block I was referring to was like the ones on the Bulgarian SAM-7. It should fit, but, as stated above, you should measure first.
POLYTHENEPAM  [Member]
2/20/2010 12:11:35 PM
Originally Posted By blasterrider88:
The maks have heavy barrels dont they

That is the AK 47 barrel profile.

Seattle206  [Member]
2/21/2010 2:58:28 AM
AKM profile FSB wont fit. Stated above, Chinese 47's have the fat AK47 barrels. I found a bulgarian 47 FSB that fits perfectly, only difference is that the hood is open oppose to closed like the Chinese ones.

Here is a pic:

blasterrider88  [Member]
2/21/2010 1:08:04 PM
thanks for the information and thats a cool picture
Black-Tiger  [Team Member]
2/21/2010 1:20:42 PM
Well now; that's a very useful tidbit. Thanks. You win 500 Internets.
CarlosC  [Member]
2/28/2010 5:34:34 PM
Originally Posted By tstorm31:
Just the die to thread the barrel is $60

Also, you need to check the muzzle first to make sure there is enough metal to cut the threads. Some MAK's had the threads turned off and didnt leave alot of metal.


If it's a MAK that has had the threads removed, you'll either have to have a welder rebuild the barrel end so you can rethread it or simply do what everyone else does and thread the barrel at 1/2x28. MAKs with threads are rare. After all, part of process of turning the Chinese AKs into Modified AK of 1990 was to remove the threads or make them unusable by welding a sleeve over the threads.

$60 for just a die? That's not true. You can get the whole set up for less than that.

Die holder from Brownells - $15
Die from Brownells -$22
TAT from CNC - $6.50
blasterrider88  [Member]
3/1/2010 4:07:51 PM
Originally Posted By CarlosC:
Originally Posted By tstorm31:
Just the die to thread the barrel is $60

Also, you need to check the muzzle first to make sure there is enough metal to cut the threads. Some MAK's had the threads turned off and didnt leave alot of metal.


If it's a MAK that has had the threads removed, you'll either have to have a welder rebuild the barrel end so you can rethread it or simply do what everyone else does and thread the barrel at 1/2x28. MAKs with threads are rare. After all, part of process of turning the Chinese AKs into Modified AK of 1990 was to remove the threads or make them unusable by welding a sleeve over the threads.

$60 for just a die? That's not true. You can get the whole set up for less than that.

Die holder from Brownells - $15
Die from Brownells -$22
TAT from CNC - $6.50


I was looking at brownells and it said $60. I may have misread though. I found it cheaper somewhere else with a thread allignment tool.
CarlosC  [Member]
3/2/2010 10:10:17 PM
Originally Posted By blasterrider88:
Originally Posted By CarlosC:
Originally Posted By tstorm31:
Just the die to thread the barrel is $60

Also, you need to check the muzzle first to make sure there is enough metal to cut the threads. Some MAK's had the threads turned off and didnt leave alot of metal.


If it's a MAK that has had the threads removed, you'll either have to have a welder rebuild the barrel end so you can rethread it or simply do what everyone else does and thread the barrel at 1/2x28. MAKs with threads are rare. After all, part of process of turning the Chinese AKs into Modified AK of 1990 was to remove the threads or make them unusable by welding a sleeve over the threads.

$60 for just a die? That's not true. You can get the whole set up for less than that.

Die holder from Brownells - $15
Die from Brownells -$22
TAT from CNC - $6.50


I was looking at brownells and it said $60. I may have misread though. I found it cheaper somewhere else with a thread allignment tool.


I took the prices I quoted from their website the day I posted, so they are current.

The one thing you want to be careful of with the cheaper die sets is the diameter of the die. Whatever you do, do not get a 1" die or die holder. The wall thickness on one-inch sets is very thin, which could lead to the wall breaking. Trust me, I learned that the hard way...


Brownell's sets are good and thick and won't break.
blasterrider88  [Member]
3/2/2010 10:44:39 PM
thanks for the information
ibuytoys  [Member]
5/20/2010 4:05:38 PM
If it's a MAK that has had the threads removed, you'll either have to have a welder rebuild the barrel end so you can rethread it or simply do what everyone else does and thread the barrel at 1/2x28.


Question, being that this rifle uses a .30 cal bullet wouldn't you use a muzzle device utilizing a 5/8x24 thread?
Imaposer2  [Member]
5/20/2010 4:37:17 PM
Standard AK threads are 14mm LH which requires a diameter of 0.550" or so. Some MAKs were never threaded so the original barrel diameter is still there. On others they were already threaded and then converted for import by grinding the threads down. On the MAKs that had the threads turned down the diameter is usually around 0.500. To small for 14mm, way to small for 5/8" and just right for 1/2".

My Norinco NHM-90 on the other hand still has the original threads and they just tack welded a threaded sleeve over the muzzle. Took about 15 minutes with my dremel to cut the welds and remove the sleeve, a little filing with a jeweler's file to smooth things up and a little cold blue, and...wha-la... instant threaded barrel. Detent pin and spring was still in the FSB too.

There is a virgin Chinese FSB with intact fangs listed for sale in the classifieds over on theakforum. Just a standard FSB, not the spike version. $70 if interested.

Not sure how secure the rod will be without the GB hole though.
ibuytoys  [Member]
5/20/2010 4:49:19 PM
What muzzle device are you guys using that has 1/2x28 thread that fits a 7.62 round through it? I have a MAK 90 that I would like to "tacticalize" and the barel is .550".

Sorry for the dumb questions. I just fit a .308 bullet through a Noveske Pig so I figure anything will work that fits on a AR-15.
Imaposer2  [Member]
5/20/2010 6:21:47 PM
If you have 0.550" muzzle diameter you are GTG with the standard AK 14mm LH threads. Then if you have a detent pin you can get anything made for 7.62 AKs, from a variety of sources.

If you only had 0.500" you could then thread to 1/2" x 28. There are quite a few AK muzzle devices made specifically for this sort of application.

CNC Warrior springs immediately to mind but there are many others as well.
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