KAK Industry KF-15 Complete Lower Features The KAK Industry KF-15 complete lower receiver starts with 7075-T6 aluminum forgings produced in the USA a material choice that delivers significantly more strength and fatigue resistance than lower grade 6061 aluminum used in some budget builds. Machined with an M4 style fire control group pocket the lower accepts standard mil-spec trigger components without any fitting so builders can drop in whatever trigger group suits their application. A low shelf design in the receiver supports RDIAS installation and the use of an Accuwedge giving builders flexibility for specialized configurations beyond a standard semi-auto build. Pictogram selector markings on both sides of the receiver make the safe and semi positions instantly recognizable regardless of which side the shooter views from. The lower is finished in a Type 3 Class II hard coat anodized deep matte black a mil-spec level coating that resists scratching corrosion and fading far better than a standard anodized finish. It ships complete with an A2 fixed stock A2 grip rifle length buffer tube and buffer already installed meaning builders are not left sourcing and installing those components separately. The receiver is threaded for an upper receiver tensioning screw letting builders eliminate upper to lower wobble for a tighter more consistent fit. Rated for Multi-Cal use and accepting all mil-spec lower receiver components the KAK Industry KF-15 is a solid foundation for any AR-15 build available for sale at GrabAGun. KAK Industry KF-15 Complete Lower Specifications Manufacturer: KAK Industry Model: KF-15 Type: Complete Lower Receiver Action: Semi-Automatic Caliber: Multi Color: Black Finish: Anodized Grip: A2 Grip Stock: A2 Stock Safety: Manual Weight: 2.67 lbs Available At: GrabAGun