If you're going to use the Uncle Mike's Push Button studs, you'll have to bore a much larger hole in the stock. Make sure you have enough room inside, and enough profile outside to sink it flush.
The only problem with the Push Button studs are, these new versions are glued in, and you may have trouble getting any glue to stick to a synthetic (plastic) stock material.
The older Push Button studs had a mounting screw that passed through the stud and into the stock.
Possibly Uncle Mike's still has these, so you may want to email them and ask.
They're good about email customer service.
There were two types of screws for these, the rear was a standard wood screw, the front was a machine screw with a internal nut.
This would work well for a hollow buttstock since you might be able to attach the nut from inside the stock.
Otherwise, email Speedfeed and ask about suitable glues.
If you decide to go with the Speedfeed stud, you might take a look at Uncle Mike's Military-spec swivels:
http://www.unclemikes.com/adtemplate.asp?
invky=9008332&catky=1279575&subcatky1=4548842&subcatky2=2000117You CAN use the Push Button on the front and a standard QD on the rear, or you can just get a QD stud made for the Remington extension clamp and rivet in place on the bottom of the clamp, then use the Mil-spec swivels.
You might want to wait until you get the gun, so you can check and see if the clamp comes with the stud already attached.
Here's Uncle Mike's copy of the Remington factory clamp. Note the sling swivel stud mounted in the bottom.
If your gun's clamp doesn't have the stud, you can buy the stud from Remington, OR ask Uncle Mike's, since I'm sure they'll be able to sell you one.
www.unclemikes.com/adtemplate.asp?invky=9004490&catky=1465723&subcatky1=4548843&subcatky2=2000180