The Tactical Folding Butt Stock w/ Cheek Piece For AK 47 (Polymer Joint) offers you a supreme tactical upgrade for your AK 47. Advantages: Tough and Robust Design, Slim and Low Profile Rubber Butt Plate for Reducing Recoil and Slipping Imbedded Adjustable Cheek Piece Design Will Allow Appropriate Clearance for Trigger in Folded Position  TACTICAL KNUCKLE FEATURES: Push Button to Release Locking, when Open, Spring Lock on Folded Position, Pull to Open and Lock from the Folded Position May be Mounted to Fold Left Side or Right Side