You can grind down the sides of your recoil lug to fit the recess of the accustock or order a accustock lug, I though I saw one on midway ?

https://www.midwayusa.com/product/17...ccu-rail-steel

$10 to $14 blued or stainless.

I've inleted bottom bolt release stocks for top release. It's simple with a dremel.

If you need to open up the barrel channel, a socket and sand paper does a good job.