Real Avid Top AR15 Mods Instructional Book - To serve the huge base of AR15 owners who are fueling the growth of aftermarket accessories, Real Avid created a master Gun DIY instruction manual. It's packed with easy-to-follow, photo illustrated, step-by-step, how-to-do-it directions for the 18 most popular modifications for AR15s. Written and edited by professional armorers, this authoritative book gives users the confidence and know-how to tackle everything from a simple sight install to the more challenging changing out of a barrel…and everything in between. 18 Top Mods shows how to build it right. Step By Step Instructions Top 18 AR15 Modifications Do It Yourself Manual Instructional Book