This aftermarket Ruger 10/22 quad rail mount system with weaver/picatinny rails is compatible with original factory wooden stock. The Ruger 10/22 tactical quad rail is made from black anodized aircraft grade aluminum and design offers plenty of picatinny rail space to mount tactical accessories to your rifle like laser sights, bipod, grips, reddot sights and scopes. The T-marked rails allow accessories to be removed and replaced with ease. Length: 15”. Accepts all standard Weaver / Picatinny 1913 accessories. Note only compatible with original factory wooden stock. Rail covers included.