The MCA(TM)-22 allows users the best possible fit for recreational, hunting, and competition shooting. Easily install your RugerA(R) 10/22A(R) or similar receiver, trigger group and barrel into the MCA(TM)-22. Accepts standard or bull barrels. Butt Stock Features Ambidextrous goose-neck style pistol grip with palm swell. Click-adjustable cheek piece/front and back .750" / up and down 2" (=1"/-1" from bore center) Aggressive grip panel and front grip strap texturing Length of pull adjustable from 11.25" to 15.75" in .75" increments 1" Vertical butt pad adjustment Two locations to accept Grovtec Threa Mfg: Luth-Ar