The Magnum Research Magnum Lite is a family of semi-automatic rifles chambered in 22 LR or 22 WMR. Stainless steel graphite wrapped barrels are available in a variety of lengths and an integral weaver rail allows users to attach their choice of optics. The MagnumLite rifle weighs less than five pounds when loaded. Details Specifications and Features - Caliber .22 Win Mag - Barrel 18 Stainless - Weight 7.3 lbs - Length 37 overall - Sight Rail for Weaver Style Rings on Receiver - Stock Hogue OverMolded Stock - Magazine One 9 Round - All barrels feature an 11 degree crown. The .22 Win Mag version has a patented gas system and block under the barrel that taps a small amount of gas through a orifice hole in the barrel.