The DeSantis Gunhide Transit Holster, is an old school IWB holster with a new school twist. It is built from firm, sueded center cut steerhide and reinforced at the top with both KydexA(R) and premium saddle leather to aid in easy re-holstering. The holster also has a heavy-duty spring steel clip which can easily be moved over to either side making this holster ambidextrous. Most models of the holster are red dot compatible. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.