Aaron, unfortunately these are rare as hens teeth to find, especially in the current market. I would check on large gun and accessory sites like (6)un (8)roker, Armslist and Guns America as discontinued and hard to find firearms and accessories show up for sale by private individuals and small shops. Just replace (6) & (8) with G & B.

Discontinued. As everyone else stated, remington is basically out of business. Good luck.

As far as any Remington products go, its hard to say for certain what will still be made and what will not. Remington filed bankruptcy in 2020 and split their brands and auctioned them off in to 7 separate buyers.
From what I've read Remington stopped all production around summer of 2020, and its expected that New owners ( JJE Capital Holdings LLC for DPMS, H&R, Stormlake, AAC and Parker brands ) will be putting out new products around summer of this year.
In the meantime you may just have to find an R25 on the used market at sites like (G)un Br0ker, armslist.com, and Gunsamerica.com.

They are DISCONTINUED, Remington went bankrupt last year and the company got sold off in pieces to different companies. I highly recommend AGAINST buying Remington right now because you will not get customer service support and parts support due to the current situation. R25 is a DPMS 308 marked for Remington and is an ok gun. Not great, especially for the high price. I would look at other AR 10 like PSA. I hope this helps!