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View Full Version : Removing the FS2000 FH?


bobthenailer
12-16-2006, 09:31 PM
Can you remove the FS2000 FH and replace it with an AAC quick attatch FH for te M4-2000 can? If so, what model FH would work with it? I am using their AR15 one on my PS90 SBR, can I assume it is the same.

Nosferatu
12-16-2006, 09:40 PM
It is pinned & threaded on. It uses the same thread pattern as the FNC, 9/16x24 LH.

bobthenailer
12-16-2006, 10:36 PM
Could you help me understand the pin that holds it on, is a wrench going to take it off? I don't want to scratch it up if there is a right way to do it.

Thanks

Megatron
12-16-2006, 11:34 PM
Could you help me understand the pin that holds it on, is a wrench going to take it off? I don't want to scratch it up if there is a right way to do it.

Thanks

That blind pin will have to be drilled out before you can take that flash hider off. If you don't feel confident that you can drill out that blind pin without scratching the finish, then it's best that you have a competent gunsmith take out that blind pin for you.

Monolith Arms
12-17-2006, 10:19 AM
The best way to remove those pins is with Wire EDM. You also won't risk the drill bit wondering on you when it hits the hardned pin next to a softer steel. It should run about $35. A small price to pay in my opinion.

phxfa
12-17-2006, 11:54 AM
I used a dremel tool, you can see the color and the difference in metal between the FH and pin, I cut a groove in the FH which only showed the outside edge of the pin and using a drift I lightly tapped it out, let me know what you find under there! Mine had a surprise :mad:

mcguiver-007
12-17-2006, 12:11 PM
I have posted on this board before about the second groove in the barrel If you want to remove the existing FH you will need to find another way to cover the barrel to hide the groove.

This is what I did.

http://www.photodump.com/direct/mcguiver-007/Picture019.jpg

phxfa
12-17-2006, 12:19 PM
so what is the 2nd groove for? Mine is right at 16 inches and I dont want to SBR this weapon, I do have 1 gunsmith that has successfully cut these barrels down,just waiting on the correct Gemtech FH 9/16-24 LH

mcguiver-007
12-18-2006, 03:30 PM
Near as I can tell I am the only person with a F2000 barrel installed on my FS2000 this meens I had to have the FH permamounted onto the muzzle to avoid SBR. but even the F2000 barrel has the groove cut into it about 1.3 " back from the end of the muzzle but I have no idea what it is for. I used part of the FH from my FS barrel to cover the groove in the F2000 barrel and it worked out fine.

falken
12-23-2006, 10:16 PM
where did you get the flashlight holder? handguard?

btown02
12-23-2006, 10:26 PM
Welcome to the forum.

Megatron
12-23-2006, 10:38 PM
where did you get the flashlight holder? handguard?

He modified the existing handguard. The inside of the handguard has cutouts on the inside so holes could be cut to mount a flashlight.

martyr
01-02-2007, 01:04 AM
Emboldened by these boards, I set about doing it myself tonight, and took photos because I am, before anything else, an internet geek.

First thing I did was drill the center of the pin with a 1/16" titanium bit for about 6mm.
Then I switched to a 5/64 (the diameter of the pin/hole) and took 1.5mm out before the pin fell out.
http://img217.imageshack.us/img217/1995/gorezh9.jpg
It was a gory scene.
http://img521.imageshack.us/img521/3514/pinclose1yw4.th.jpg (http://img521.imageshack.us/my.php?image=pinclose1yw4.jpg)http://img521.imageshack.us/img521/8867/pinclose2cy2.th.jpg (http://img521.imageshack.us/my.php?image=pinclose2cy2.jpg)

I wrenched on it a little bit, it was sticky, so I pumped some breakfree in. I started the wrong way despite knowing it was left-handed, so:
http://img149.imageshack.us/img149/5351/unscrewzo2.jpg
Left handed-threads mean this way. Clockwise if looking down the bore from muzzle to chamber.

The flat grabby spots can be manipulated with a 3/4" wrench, but it will scuff the finish. I estimate that it's 18mm (my largest metric is 16mm and my calipers are still packed).

What to expect once you've met with stunning success:
http://img391.imageshack.us/img391/3540/barrelcutswc9.jpg
The extra pin cut everyone's been talking about. The FH is lined up with where it was mounted here, you can see that in this version the rear pin cut is unused. You can see it was used in some of the older fs2000 pictures.

Last thing: now that I have the pin out, the FH tightens down upside-down, it's loose if i turn it 180 degrees to orient it correctly. Shrug.

LewisQ
01-05-2007, 05:18 PM
Near as I can tell I am the only person with a F2000 barrel installed on my FS2000 this meens I had to have the FH permamounted onto the muzzle to avoid SBR. but even the F2000 barrel has the groove cut into it about 1.3 " back from the end of the muzzle but I have no idea what it is for. I used part of the FH from my FS barrel to cover the groove in the F2000 barrel and it worked out fine.

Whre did you get a F2000 barrel?

mcguiver-007
01-07-2007, 01:37 PM
Whre did you get a F2000 barrel?



a friend is a class two manufacturer who provides most of the weapons for several of my locale LE agencies He has a F2000 and was able to Order a replacement barrel through FN Belguim and rethread it for 1/2 28. He pinned the phantom FH on it before transfering it to me to avoid any SBR complications so its final OAL is 17.5" Though I have heard several people having luck cutting their FS barrels down and this would probably work better as the F2000 barrel is .25" to short for legal leingth and if you cut the FS barrel you can keep it legal.

martyr
03-01-2007, 03:13 PM
thread bump for important note:

I just got off the phone with batfe imports, making these modifications violates us code 922r unless you register it under title II.

That is, a threaded muzzle, compensator, or flash hider are not importable features.

Megatron
03-01-2007, 07:22 PM
thread bump for important note:

I just got off the phone with batfe imports, making these modifications violates us code 922r unless you register it under title II.

That is, a threaded muzzle, compensator, or flash hider are not importable features.

If you rethread the barrel for 1/2"x28 threads and permanently pin the new flash hider or compensator in place, it will no longer be in violation of 922r.

dwill
03-02-2007, 10:08 PM
If you rethread the barrel for 1/2"x28 threads and permanently pin the new flash hider or compensator in place, it will no longer be in violation of 922r.

Maybe. It's tough to say without knowing what the BATF considered the muzzle device on the end of a weapon. If they consider it a compensator and you take it off and replace it with a flash hider, that may be in violation of 922r, pinned or not.

martyr
03-05-2007, 03:52 AM
The batf told me that the factory one is a muzzle brake on friday, not a compensator or a flash hider.

He went on to tell me that the sample rifle they were sent from FNH had an F2000-length 15.5" barrel on it, not the 17.4 we got. shrug.

Megatron
03-05-2007, 09:49 AM
The batf told me that the factory one is a muzzle brake on friday, not a compensator or a flash hider.

He went on to tell me that the sample rifle they were sent from FNH had an F2000-length 15.5" barrel on it, not the 17.4 we got. shrug.

The reason for the 17.4-inch barrel is that the FS2000 could be sold in states such as Michigan, where the minimum overall length is 28 inches instead of the 26-inch minimum overall length.

3par
03-05-2007, 04:36 PM
Maybe. It's tough to say without knowing what the BATF considered the muzzle device on the end of a weapon. If they consider it a compensator and you take it off and replace it with a flash hider, that may be in violation of 922r, pinned or not.

Why does it matter if the replacement part is US made ?

btown02
03-05-2007, 04:39 PM
Why does it matter if the replacement part is US made ?
Read this.

http://fivesevenforum.com/forums/showthread.php?t=5196

grammaton76
04-17-2007, 03:23 PM
The batf told me that the factory one is a muzzle brake on friday, not a compensator or a flash hider.

He went on to tell me that the sample rifle they were sent from FNH had an F2000-length 15.5" barrel on it, not the 17.4 we got. shrug.

Fascinating. A guy on Calguns.net posted that the FS2000 owner's manual describes it as a flash hider. I know my PS90's owner's manual specifically states "flash hider" for its muzzle device.

Does the BATF have a different classification for flash hider?

Megatron
04-17-2007, 05:03 PM
Does the BATF have a different classification for flash hider?

According to the BATF, a flash hider does what its name implies.

Since the "flash hider" on the FS2000 does not hide any flash, then it's not considered a flash hider at all.

3par
04-17-2007, 05:07 PM
Grammaton76,
Good luck on pulling that BATF quote to CaBoF.

dwill
04-19-2007, 07:53 PM
According to the BATF, a flash hider does what its name implies.

Since the "flash hider" on the FS2000 does not hide any flash, then it's not considered a flash hider at all.

Has it been definitively proven that the FS2000 muzzle attachment provides zero flash reduction over the bare barrel? Given the appearance and general similarity to the F2000 FH, I find that difficult to believe. Is there documentation from the BATF that confirms they consider the FS2000 muzzle attachment something other than a FH, like a muzzle brake?

Esteves
04-19-2007, 09:25 PM
Is there documentation from the BATF that confirms they consider the FS2000 muzzle attachment something other than a FH, like a muzzle brake?

ATF permits them to be imported for commercial distribution. Isn't that enough?