Rifle Dynamics AK full tang to AR buffer tube adapter
These fit around the tang, putting the stock more in line with the barrel, helping with recoil impulse and allowing a better cheek wield with an optic. Also very sleek looking imo.

will include full kit - buffer tube, castle nut and Magpul moe k stock for right trade

https://www.brownells.com/gun-parts/rifle-parts/rifle-stocks-parts/ak-47-m4-stock-adapter/

Trades
-Magpul AK 7.62x39 mags
-AUG mags
-Magpul AR 10 mags

Sell just the adapter $50
Whole kit $80