FREE +2 MAG BOTTOM 1 For 1 WITH THIS MAG Brand New • 4th Generation Glock Factory Mag • These Mags Will Fit Both The New Glock 21SF and the Glock 21, Cut For Ambidextrous Mag Catch. GLO421SF P.O. Box 6514 • Abilene, Texas 79608 • Telephone 800-588-9500 • Fax 325-695-4898