Patrick Sweeney. 255 pages. 8¼" x 11". Softbound. Over 300 detailed B&W photographs. Comprehensive information from a master gunsmith and noted AR expert on how to maintain, repair, and accessorize the AR-15 rifle. Covers models from the early M16 through current-production M4 carbine. Discusses checking components for serviceability, disassembly, barrels, sights, handguards, flash hiders/muzzle brakes, calibers that fit the platform, bolts and carriers, buffers and recoil springs, lower receiver components, stocks, magazines, slings, optics, pistol versions, piston systems, and field malfunction clearance.