The ProMag Archangel Quick Break Down (QBD) stock converts standard Ruger 10/22 models into a quick break down design. A patent pending stainless steel V-block clamp with adjustable toggle lever facilitates rapid but precise barrel removal and installation. Clamp system repeats zero even with receiver mounted optics. The folding stock design with integrated barrel storage enables the rifle to be stored in compact spaces; perfect for campers and survivalists. The inlet features an aluminum bed block chassis embedded in a blend of high strength carbon fiber and glass filled reinforced black polymer. 18.5" barrel minimum length is required in states that specify a minimum 26" overall length in functioning configuration. This stock can be fired with the buttstock folded. Fits Ruger 10/22 standard carbines* Quick Break Down design Unique design allows rapid barrel removal and installation Patent pending steel adjustable lever toggle V-block clamp Integrated barrel storage (up to .920" diameter) enables the rifle to be stored in compact spaces Constructed of high strength, carbon fiber and glass reinforced black polymer Full surround, embedded aluminum bed block chassis Additional buttstock storage areas Weight: 1.9 pounds Lifetime Warranty** Made in USA NOTICE : *Does not work with Ruger 10/22 Takedown models. **Lifetime Warranty protects against manufacturer defects (See Warranty)