At 26.1 inches long the Kel-Tec RDS Survival makes your AR-15 look and handle like a musket.The bullpup design also means that the Kel-Tec RDB using 5.56 ammo reaches higher velocities than an 11" barrel that is found on a comparable-length AR-15 sbr or pistol.The Kel-Tec RDB OD Green Survival rifle is truly the product of forward thinking by the engineers at the Kel-Tec R&D division.This bullpup rifle is truly revolutionary thanks to the downward shell ejection system which eliminates the side ejection system typically found on other bullpup designs.Additional the RDB-S bullpup rifle features an adjustable system making it great to use with a wide variety of ammunition from .223 Remington up to 5.56 NATO.Moreover the RDB-S can serve as an excellent host platform for individuals who already own a suppressor and wish to suppress the bullpup platform providing you with a short overall length rifle great for hunting or personal protection.The RDB-S is compatible with all standard pattern AR-15 magazines.DOWNLOAD THE KELTEC RDB SURVIVAL RIFLE OWNER'S MANUAL