[Buffman]

I would like to know this as well

I'm not aware of s different factory stabilizer weight for the P90. I thought the P90 and PS90 shared the same stabilizer.

 

[workingman1976]

I'm not aware of s different factory stabilizer weight for the P90. I thought the P90 and PS90 shared the same stabilizer.

I was under the impression there is no difference except for the trigger pack and the p90 stock is modified to only allow the FA pack.

 

[aggie113]

Bought a set of bicycle wrenches off Amazon. They come thin.

 

[metroplex]

What did everyone put down for OAL and barrel length on the Form 1? I see a consensus for 10.39" barrel length, but doesn't the overall length measure the length of the stock fully extended (in our case, just as-is) with all muzzle devices removed? The 19.88" that everyone seems to use (including's FN's site) seems to include the removable flash hider. The OAL w/ the muzzle device removed seems closer to 18".

 

[Milspec]

What did everyone put down for OAL and barrel length on the Form 1? I see a consensus for 10.39" barrel length, but doesn't the overall length measure the length of the stock fully extended (in our case, just as-is) with all muzzle devices removed? The 19.88" that everyone seems to use (including's FN's site) seems to include the removable flash hider. The OAL w/ the muzzle device removed seems closer to 18".

I was looking on the forum in regards to this last night. I saw 10.4" for the barrel and 19.75" OAL.

 

[metroplex]

I was looking on the forum in regards to this last night. I saw 10.4" for the barrel and 19.75" OAL.

I am pretty sure everyone is using 19.75-19.88 with the muzzle device attached. I read you’re supposed to take the OAL measurement with all muzzle devices removed unless it is pinned and welded.I was also told you cannot go shorter than what you reported as the OAL but could Go longer.

 

[Milspec]

I am pretty sure everyone is using 19.75-19.88 with the muzzle device attached. I read you’re supposed to take the OAL measurement with all muzzle devices removed unless it is pinned and welded.I was also told you cannot go shorter than what you reported as the OAL but could Go longer.

This is my understanding as well. I'm looking to do a form 1 myself pretty soon.

 

[metroplex]

This is my understanding as well. I'm looking to do a form 1 myself pretty soon.

So with the muzzle device removed, the OAL is closer to 18" and not the 19.75-19.88 that everyone uses. I believe FN's P90 overall length measurement on their website takes into account the removable flash hider.

 

[jaflowers]

Once an SBR is approved you can do to it whatever you'd like. If you have a 14.5" AR and go to a 10" then to a 7.5" the ATF doesn't care, just like they don't care the caliber change either. My PS90 SBR was submitted as 19.9" for the record, and I took a rough guess when I did it since I didn't have a fully put together gun in front of me to measure when filling out the paperwork.

 

[Milspec]

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