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How To: Foam Stock Mod for VSR10 and Clones

6305 Views 8 Replies 5 Participants Last post by  MGunner
I spent all day today foaming the stock on my BAR10, here is a quick guide.

Don't try this method in a APS or clone, you will most likely ruin your rifle.

Disclaimer!: I cannot be held responsible if you try this and destroy your rifle!

- VSR10 or Clone (If it looks like a VSR10 and has a hollow stock, it will work)
- Sprayable Foam Insulation (Make sure it's low expanding, I used ''Great Stuff'' in the a red can)
- Exacto knife or razor blade
- Something to keep you occupied
- Paper Towels
- Something to scrape away the extra foam (I just used a wooden stick thing I found in the kitchen )
- Tape (Painters will work best)

How to

Strip your rifle down to just the stock, and remove the rubber butt plate, then put a piece of the painters tape over the hole that the rear of your trigger guard. (Not really necessary, I didn't do it but it stops a small bubble of foam from forming, that would would have to trim anyway)

Next, Shake your foam and if needed, screw on the threaded straw that it probably came with.

Sit down and place the stock between your legs and hold it with your knees. Put straw of the foam can as far to the bottom of the stock as possible and slowly squeeze the straw. As the foam starts to fill the void, start going from side to side, slowly. Do this until the stock is about 3/4 full and stop. Just walk away. You need to give the foam time to expand before you add anymore, or do anything else, which you should do if needed. As it expands, you will probably need to scrape off the excess. Give the foam at the bare minimum 6 hours to cure. If you feel the need for more foam, go for it. After 24 hours, the foam will be safe to trim. I suggest using a razor blade or something serrated.

Your Done! Reassemble your rifle, trim any little pieces of foam. This mod will get rid of the ''toy'' like feeling, as well as make it SO much quieter

Thanks for Reading!
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Great piece of information. If I ever get a VSR this will be the first mod I do to it.

Nice work.
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Sorry for the lack of pictures, but i didn't think of a ''how to'' until after it was finished/
I did this with my brothers double eagle APS clone a few years ago... When the foam expanded It split all around the pistol grip area and took weeks to go off/dry out.
He wasn't best pleased lol.
The thing about APS + clones is that the stock isn't one piece of plastic, like the VSR10
+ clones. I'm sure there is a way to do it, I just don't know how.
I actually just used a butt ton of paper towels and stuffed them in the stock. Then I crazy glued them in place. I know it doesn't work as good, but I couldn't find any GREAT STUFF. If I do really get a new rifle, I will definitely do this. But what do you mean when you say it is two pieces?
Really? That's odd. I got mine a Home Depot. For the little money and what you have to do, this is a great mod.

The stock on my old APS clone (M324, I thought it was a clone anyway) had screws going through the grip of the rifle (the one near the bolt) and if you took those out, I know for sure you could separate the buttstock, but I can't remember about the fore stock. This made the whole rifle loud, creaky and cheesy feeling.
I have done this with all of my VSR's. Its a cheap and cheerful mod' that has a great impact of the dead air spaces of the rifle silencing it greatly.

I would just like to add the following warning to anyone about to do this -

Watch the foam! its under pressure in the can and can come out the can at a rapid rate so go careful, combine that with the addhesive contained inside the foam it can make a hell of a mess to your pudgy little fingers as it does not wipe off easily, the foam is very tacky. Get it on your fingers and it takes hours of scrubbing to get the tacky residue off.Not to mention you leave glue finger prints on everything you touch, stock, can, tape, knife, wife etc etc...
You have been warned lol.

P.S It also works with silencers An crossbow stocks.
How would you do it on a silencer? I was pondering it and couldn't come up with a good way for the foam to to expand through the holes in the baffle tube, making it a useless metal and and some plastic.
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