It may, but it will depend on the caliber of your 870. This is meant for the 12 gauge 870, but users have had success installing it on a 20 gauge receiver.
The Magpul SGA Remington 870 Stock will not fit a Winchester SXP.
Please email us at techsales@opticplanet.com regarding your question.
The Magpul SGA Remington 870 Stock will not fit a Retay GPS.
This Magpul SGA Remington 870 Stock is designed specifically for the Remington 870 and will not work on a Remington Versa Max.
There is not a model of the Magpul SGA Remington 870 Stock for a 20 gauge model Remington 870.
Possibly but that is not a guarantee, I would recommend contacting the manufacture.
The stock has an adjustable length of pull in 1/2" increments using spacers, and it adjusts from 12.5" to 14.5".
This stock is for the Remington 870, but follow the link below for the model made for the Mossberg 500/590/590A1 models.
https://www.opticsplanet.com/magpul-industries-sga-moss-stock.html
Yes, it would fit. However, changing the pistol grip or attaching a stock to the Remington Tac-14 would change the NFA classification from being a firearm to a short barreled shotgun, subject to to NFA regulation.