For Sampson folding stocks only. Hand made using matching American walnut to add a much needed cheek riser for the coveted AC-556/Sampson A-Team folding stocks. There are currently two styles of wood used on these ATM stocks due to the Ruger/Samson debacle. The “yellow” teak wood found on many factory Ruger’s won’t match the color of these cheek pieces. They will work, but these cheek pieces are made out of the more commonly seen American Walnut and are a more brown/red color.