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Mfg Item #: GCB100
The Sylvan Arms 9mm Glock Conversion Block converts your AR-15 lower to a 9mm Lower using Glock magazines. - Our Glock Conversion Block is built to handle any standard mil spec lowers with most 9mm uppers. - Works with Glock 17 and Glock 19 magazines. - Built of 60601 aircraft grade aluminum. - 100% satisfaction guarantee. - limited lifetime warranty - Designed built and assembled in the USA.