Thread: Bedding flush cups into a carbon fiber stock

Nice work Danny.

I've recently embedded 3 of those adapters into carbon stocks and like you I had a faceslap moment when I thought I'd put one adapter into the stock incorrectly. Turns out I didn't.. but for a few minutes I was kicking myself.

For my stocks I drilled the 19mm hole with a fly-cutter then used a modelling knife to cut a 5mm wide channel fore and aft in the foam core as well as laterally to spread the load of the recoil away from the very thin shell of the outer carbon layer. I used high-strength two part epoxy resin available from Mitre 10 to bond the adapters in place, in my case just one of those two-tube retail kits made by Locktite. After the adapter was correctly located and things were cleaned up a bit I fitted the bipod to make sure everything was square then used masking tape to ensure it remained in place. I left everything overnight to set.

All rifles have been field tested and work fine. To date nothing has moved but I did talk with one person a couple of years ago who stated they had found it difficult to get the adapter to stay secure due to the internal foam core being quite soft on some stocks. It was this concern which put me off doing it in the first place, but I figured the manufacturer of the Javelin has a couple mounted in his Sako Carbonlight (if you look closely at their videos online) and the Duley's had glued one into their 7mm RemMag without drama... so how hard could it be, right???

I like your sling QD cups idea. I miss that setup after handing in my AR-15 last year. It just seemed to work really well for me. I see the Sako S20 has them fitted... I wish my stocks did. Where did you buy those inserts from @dannyb?