McMillan stock, shorten

[SgtSteve]

Ok I came to the experts!

FN SPR .308 with McMillan composite stock. Previous owner brother in law; passed 2 years back, 6’4”…big guy.
Stock (trigger pull) too long. I’ve removed less length than I intended.

Now I have the butt pad with a hard spacer (Delrin?) glued to the butt plate. AND 3/8” of the composit stock glued to the spacer!
What can I use to remove the hard spacer and/or the 3/8” composite? Acetone? Alcohol? Paint thinner?
OR
Attempt cutting with a Dremel tool/wheel?

Talked to McMillan and they use a 5 minute epoxy as an adhesive. When I obtain the length I need for the stock I’ll use epoxy
as an adhesive. I will need to reshape the butt pad. No, McMillan did not use screws on the butt plate or spacer.

THANKS
SgtSteve

[Daycrawler]

Did a little reading on Derlin. You could try softening it with boiling water and see if the adhesive will release it.


Delrin begins to soften and melt at temperatures significantly above 90°C (around 175°C), meaning it remains relatively rigid until reaching its melting point, making it a thermoplastic with a wide operating temperature range; most sources state its usable temperature range is between -40°C to 120°C.



Another option may be freezing it with dry ice and making the adhesive brittle. IMO the easiest way would be to boil it and see what happens.


Can you sand it away? What would it cost to buy the new pieces required to resolve the problem?

[cdi]

Cut it off with a bandsaw, make sure pitch is flat and correct.
Drill for screws spaced the same as Pachmeyer pads.

Select pad you like, grind and install.
There are different jigs out there for the grind. I prefer the skeleton jig that hangs before a belt sander.

[SgtSteve]

Grand, I used a good cutoff but didn*t remove enough of the stock. Now I still have the recoil pad glued to the hard spacer (Delrin?) and a 3/8* of the original stock glued to the spacer.
At this point holding the button pad to remove the spacer and 3/8* piece of stock is the hiccup.
I*m going to see if I can use my electric planer to remove the 3/8*. And then*

[cdi]

I'm unclear as to exactly what you're doing. It sounds like you're going around the mountain to take a piss next door.
The procedure is cut the stock to the lop you wish and square the cut and pitch.

Then buy the butt pad/plate you like. Finish grind using a jig, secure with screws or epoxy. There are times when you can save an old pad but this doesn't sound like one of them.
Pics would help.