Thread: Carbon stock repair advice

How did it happen?
Normally failures in this location on a wooden stock point to a bedding and recoil lug issue/failure. With the receiver being forced back under recoil causing a split in the wrist.
However the square back end of your receiver I wouldn't think would cause a splitting force under recoil. Although if the recoil force is being transmitted through the action screw it may do this.
You want to sort this out if it's the cause before or as part of the fix.

If I wasn't too worried about aesthetics to fix I would sand back and put a few wraps around the wrist of fibreglass or carbon fibre cloth to reinforce and epoxy. Then sand smooth again. You could probably get it near to original dimension if done carefully.
An alternative to try and maintain aesthetics might be to make a hole in the bedding area and apply FG/carbon cloth on the inside and then epoxy bed the stock to fill the hole again. You may also chose to fill the stock with a lightweight filler to provide additional support to both the wrist and bedding.