About the Author

Patrick Sweeney is a certified master gunsmith and armorer instructor for police departments nationwide. In addition to being Handguns Editor for Guns & Ammo, he is author of The Gun Digest Book of the 1911 Vols. 1 & 2, The Gun Digest Book of the Glock Vols. 1 & 2, The Gun Digest Book of the AR-15 Vols. 1, 2, 3 & 4, Gunsmithing: Rifles, Gunsmithing: Pistols & Revolvers 1 & 2, and Gunsmithing the AR-15 Vols. 1 & 2.