Aker Leather 268 FlatSider XR17 Paddle Holster for Glock 20/21, Tan, Right Hand Made in the USA using the finest vegetable-tanned cowhide and raw materials Tested and used by law enforcement and federal agencies around the world Features contour molding, sight channel, thumb break, and retention screw. The Air-Flo Paddle incorporates dual retention barbs to help hold the holster in position for maximum concealment Fits Glock 20, 21 NOTE: If you are ordering a holster for a Glock Generation 4 weapon, please keep in mind that we manufacture our holsters for the factory standard version without any of the back strap attachments. Contact our customer service for more information on holster fits for Glock Generation 4 weapons.