AR15.Com Archives
 I threaded my MAK 90 barrel, I need FSB advice....
Alaskacajun  [Team Member]
1/29/2009 11:53:48 PM
It went pretty well...











Now I need to know if any of you have actually drilled the plunger hole on the front of the FSB. My gun dealer buddy suggested that I drilled the hole myself and install a plunger.

I guess I could, I just wanted to know if there is a way that others are doing it, like tapping a hole and useing an allen screw or something!

Any suggestions?

- Clint
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BillofRights  [Team Member]
1/30/2009 12:12:22 AM
That went really well. How did you do it?

imho, it looks so good that you pretty much have to drill a hole and put in a plunger. It would be easier than tapping in an allen screw and it would be the right way to do it.
Alaskacajun  [Team Member]
1/30/2009 12:34:13 AM
My buddy had the threader, he charged me $10 to cut the threads... no biggie. My barrel measured .55"... It was just enough to get some good solid threads on there!

I'll probably just get someone to drill it, since I don't wanna screw it up!

I wish my Ironwood stock set would show up!

- Clint
Rayman1  [Team Member]
1/30/2009 8:28:51 PM
Nice work. It looks like you'll have to drill a hole for the plunger pin if you want to use a muzzle brake or flash hider since you've threaded it now. For other folks in the future that prepare to de-ban their MAK-90's, keep in mind most Chinese military Type 56 rifles don't have threaded muzzles ergo the non-plunger pin hole FSB. Sometimes MAK-90 owners believe that since the muzzle isn't threaded, that's a part that must be "de-banned" when it actually doesn't have to be. However, the bayonet "teeth" were removed on the FSB which can either be added or another non-neutered FSB added to replace the neutered one:







Alaskacajun  [Team Member]
1/30/2009 8:43:07 PM
Originally Posted By Rayman1:
Nice work. It looks like you'll have to drill a hole for the plunger pin if you want to use a muzzle brake or flash hider since you've threaded it now. For other folks in the future that prepare to de-ban their MAK-90's, keep in mind most Chinese military Type 56 rifles don't have threaded muzzles ergo the non-plunger pin hole FSB. Sometimes MAK-90 owners believe that since the muzzle isn't threaded, that's a part that must be "de-banned" when it actually doesn't have to be. However, the bayonet "teeth" were removed on the FSB which can either be added or another non-neutered FSB added to replace the neutered one:



Rayman1, my original intention was to get the applicable FSB and install a spiker and cleaning rod...

I'm in the process of obtaining the parts and figured I would go ahead and thread the barrel for the barrel nut while my buddy had the Tap set out and ready to go!

Apparently if you thread the barrel, you must use a USA made flash hider, so that's all I'm doin'!

But Lord only knows how long it will be before I find a reasonably priced FSB and spike bayo....

- Clint
mykrowyre  [Member]
1/30/2009 11:58:48 PM
I have come to one conclusion, underfolders are popular!

Back on topic, go ahead and drill it, and insert a spring and plunger.


Alaskacajun  [Team Member]
1/31/2009 3:12:41 AM
I'm trying to figure out if it will fit in my buddy's drill press.... I'll let ya'll know!

- Clint
Rayman1  [Team Member]
1/31/2009 8:29:19 PM
Cool beans. The commercially imported "spikers" had threaded muzzles but, believe it or not, the Chinese military ones weren't threaded. Well, actually that's not true if you look at the early Chinese milled receiver rifles that had the spike bayonet assembly as those muzzles were threaded. But that's a different beast as it's a milled receiver rifle.

But anyway, sounds like you've got some plans to make a neat rifle. Finding an underfolding spike bayonet assembly is a noble quest but one that may be difficult and involve patience. And sadly when one is found, they're often $250 or even more nowadays. Have you considered one of the "clamp-on" underfolding spike bayonet assemblies that Omega sells? Several members have gone that route in the place of the actual, expensive one.

Here's a few motivational/reference photos of some Type 56 rifles with the underfolding spike bayonet assemblies - note the muzzles:









Alaskacajun  [Team Member]
1/31/2009 9:11:01 PM
Originally Posted By Rayman1:
Cool beans. The commercially imported "spikers" had threaded muzzles but, believe it or not, the Chinese military ones weren't threaded. Well, actually that's not true if you look at the early Chinese milled receiver rifles that had the spike bayonet assembly as those muzzles were threaded. But that's a different beast as it's a milled receiver rifle.

But anyway, sounds like you've got some plans to make a neat rifle. Finding an underfolding spike bayonet assembly is a noble quest but one that may be difficult and involve patience. And sadly when one is found, they're often $250 or even more nowadays. Have you considered one of the "clamp-on" underfolding spike bayonet assemblies that Omega sells? Several members have gone that route in the place of the actual, expensive one.

Here's a few motivational/reference photos of some Type 56 rifles with the underfolding spike bayonet assemblies - note the muzzles:




LOL, Ya think?

Here's one...
http://www.theakforum.net/phpBB2/viewtopic.php?t=86304

I know, this may be a last resort...


My buddy who is a pretty good gunsmith suggested that we attempt to fabricate a mount for a SKS spike, so we'll see what happens...

I plan on posting pics of whatever route I take!

- Clint








TLEII  [Member]
1/31/2009 10:05:30 PM
There is a kit to retrofit a spiker. I believe the Chinese even used these on some military rifles. CarlosC posted this for me on another thread, I contacted the company and they do in fact have the adapter w/ the bayonet for $55 plus shipping

http://www.omega-weapons-systems.com/AK47/

Item number AK09

Here is the quote from that web page
ak09 add on bayonet folding spike / with hardware $55 new
Rayman1  [Team Member]
1/31/2009 10:33:36 PM
I don't think Don (Omega Systems) updates his site very often and that's quite an old price. I just saw him last week and his current price on the clamp-on one was around $95 (he did have them for $75 a few months ago so that may be the "upped" price due to current craziness).

It does suck that the spike assembly costs as much as the MAK-90 did itself only a few years ago. The $350 is quite a lot - you're going to have to ask yourself if that amount is worth it in addition to the cost of everything else. I had to when I was doing one and I'm currently doing an early Type 56 with milled receiver and underfolding spike bayonet assembly. It adds up quick when you consider the cost of the furniture, Chinese engraving on the receiver, etc.. The only plus for me right now is that I'm using a Polytech Legend as the donor so thankfully no worries with 922/US parts crap - can use original Chinese milled furniture and magazines. But if I hadn't got a very cheap spike bayonet assembly a few months ago, there's no way I could afford to get one now to do it.
shadowcop  [Team Member]
1/31/2009 11:17:55 PM
Make sure the plunger pin isn't already there. I have a Mak 90 that had the plunger pin even with the front of the sight block. I had to really look to see it. When I pushed it, it moved. I still had to take off the FSB and install a new spring and pin. But the hole was there.
Alaskacajun  [Team Member]
1/31/2009 11:24:33 PM
Rayman1, my dealer buddy is already trying to order some of Don's bayonets but hasn't been able to get him on the phone!

He suggested that we just build one (mount)... I'm startin' to think the same thing!

- Clint
Alaskacajun  [Team Member]
1/31/2009 11:27:54 PM
Originally Posted By TLEII:
There is a kit to retrofit a spiker. I believe the Chinese even used these on some military rifles. CarlosC posted this for me on another thread, I contacted the company and they do in fact have the adapter w/ the bayonet for $55 plus shipping

http://www.omega-weapons-systems.com/AK47/

Item number AK09

Here is the quote from that web page
ak09 add on bayonet folding spike / with hardware $55 new



I've found several places that stock them... I just don't think they look all that great...

http://aa-ok.com/products/1334-folding-spike-bayonet-assy-chinese-retro-fit-for-ak47



To me, this looks MO BETTA....



- Clint
Alaskacajun  [Team Member]
1/31/2009 11:33:46 PM
Originally Posted By shadowcop:
Make sure the plunger pin isn't already there. I have a Mak 90 that had the plunger pin even with the front of the sight block. I had to really look to see it. When I pushed it, it moved. I still had to take off the FSB and install a new spring and pin. But the hole was there.


When was yours made?

Mine's a 94 gun.... there's no hole in mine!

- Clint



TLEII  [Member]
2/2/2009 12:58:01 PM
I sent them an e-mail a few weeks ago and they said the price was good and that they were in stock, I decided I did not need one though. Perhaps they will honor the price if you tell them you saw it on the web page?

I found the e-mail, here is what they said....

To: ddbell@flash.net
Date: Monday, January 5, 2009, 5:32 PM
Do you have part #AK09 in stock from this page?
http://www.omega-weapons-systems.com/AK47/

From: DONALD BELL [ddbell@flash.net]
yes add $5 S&H



Originally Posted By Rayman1:
I don't think Don (Omega Systems) updates his site very often and that's quite an old price. I just saw him last week and his current price on the clamp-on one was around $95 (he did have them for $75 a few months ago so that may be the "upped" price due to current craziness).

It does suck that the spike assembly costs as much as the MAK-90 did itself only a few years ago. The $350 is quite a lot - you're going to have to ask yourself if that amount is worth it in addition to the cost of everything else. I had to when I was doing one and I'm currently doing an early Type 56 with milled receiver and underfolding spike bayonet assembly. It adds up quick when you consider the cost of the furniture, Chinese engraving on the receiver, etc.. The only plus for me right now is that I'm using a Polytech Legend as the donor so thankfully no worries with 922/US parts crap - can use original Chinese milled furniture and magazines. But if I hadn't got a very cheap spike bayonet assembly a few months ago, there's no way I could afford to get one now to do it.


mykrowyre  [Member]
2/2/2009 1:12:57 PM
Anyone notice the lack of dimples in one of those photos?

See.. dimples don't mean nuthin :)
urbanredneck  [Member]
2/2/2009 1:15:16 PM
I ordered a section of demilled barrel that had a FSB and gas block. You drive the pins out and then beat both of them off of the barrel.


http://www.armsofamerica.com/ak47barrelsparts/barrels.html
cadillacguns  [Member]
2/4/2009 1:33:25 PM
Could you buy the clamp and screw, have the screw ears cut off and the matching ends that meet in the middle tig welded on, and the weld gob smoothed down kinda {} to look like [] after the weld and smooth? Just a suggestion?!?

I have one undrilled assembly left (not for sale) bought ifour in "93" for $25 ea, used three allready, hanging on to the last one, all you had to do was dremel off the old neutered fsb, and tap the new one on and drill the holes.

$350 is rediculous, but so is it at $350 a case of Yugo 7.62x39, heck I never paid over $350 for any of my old chinese friends................

PS buy a Bulgarian AK-47 FSB and get a slide on chinese long handled bayo, and your good to go.
mykrowyre  [Member]
2/6/2009 12:08:14 AM
I think I am in love.

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