AR15.Com Archives
 POF Predator rail question
TCBA_Joe  [Team Member]
6/9/2009 9:26:09 PM
I just got a hold of what appears to be a P-4 POF Predator rail. It looks identical but doesn't have amy markings. The upper it was on a DI not a gas piston.

My question is in this picture what is that little metal piece on the bottom right?
I thought that piece was under the rail on the upper I pulled it from, but it doesn't fit when attached to a stripped upper I have.

If you look at this picture of a Predator P-4 there is an extension over the very end towards the charging handle which the above picture (nor my rail) have.


Are these 2 different rails pictures or am I missing something? I also really need to know what that third piece of the rail is. Thanks!
RedFalconBill  [Team Member]
6/9/2009 9:49:28 PM
That small piece is called the barrel nut spacer. It goes on the top of the barrel nut.

There are three different P-4's

P-4
P-4X
P-4SX

The photo of the HG alone is the P-4

The photo of the carbine shows a P-4X.
TCBA_Joe  [Team Member]
6/10/2009 11:54:40 AM
Ok, thanks.

I guess I'll have to just put up with the gap on the rail between end of the P-4 and the rear of the receiver. Can't beat a free POF rail.
ILove2Shoot  [Industry Partner]
6/10/2009 12:01:28 PM
The X in the P-4X means it is extended to cover the entire receiver. if you have just a P-4 that will leave some room to mount a standard flip up rear sight behind the rail so you do not have to buy a shorter flip up sight. I have 1 or 2 like that. just get a rail mounted front sight and your good to go.
TCBA_Joe  [Team Member]
6/10/2009 12:38:46 PM
Wouldn't the back sight be lower in relation to the front sight if the front sight is attached to the rail?

I'm I'm looking at a Magpul MBUS setup and Burris fastfire combo for sights. Inexpensive but I'm not going super expensive on a range toy.
TCBA_Joe  [Team Member]
6/11/2009 1:52:09 PM
WHat the difference between the P-4X and the P-4SX?
RedFalconBill  [Team Member]
6/11/2009 10:18:53 PM
Originally Posted By TCBA_Joe:
WHat the difference between the P-4X and the P-4SX?


The SX is POF's slim line model.
DseriusPayne  [Member]
6/13/2009 6:30:31 PM
Originally Posted By TCBA_Joe:
WHat the difference between the P-4X and the P-4SX?


I asked primarily the same question last week. The answer to be more specific is that the S or slim model does not have full length rails along the side. I can't wait for my predator rail to get here next week, it will be like Christmas in June.