Remington 870 super slug Sure Shot / Remington 870 super Mag

[dearslayer]

I have the Remington 870 super slug with the thumb hole stock. I've had this gun for quite a few years now and was looking to change up the stock and the forestock just for a change. I see FOC has the magpul black stock and black forestock for the 870 but the description for the fore stock states that is not compatible with the Remington 870 super mag. Does this mean that it's not compatible with my Sure shot super slug? So I guess essentially what I'm asking is what is the difference between the Remington 870 super slug Sure shot and the Remington 870 super mag?Attaching a photo of the description for the fore stock and also a generic photo of the super slug that I own.

 

[Blastattack]

Is your gun a 3-1/2" gun? If it is, it's likely in the same barrel as the Super Mag.

 

[dearslayer]

I'm not at home at the moment and it's stupid that I don't remember for sure but I'm pretty sure it's 2 3/4 and 3". Not 3 1/2".

 

[0faustus0]

From the picture it is a 3" gun .... not 3 1/2".

3 1/2" 870 bolts look different