Zaffiri Precision Suppressor Height HD Sights Black Anodized w/Red Fiber. High quality NOT hollow has a set screw on rear uses stainless front screw features you wont find on competitors at this price. 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. Specifications for Zaffiri Precision Suppressor Height HD Sights: Manufacturer: Zaffiri Precision Gun Make: Glock Color: Black Front Sight Color: Black Rear Sight Color: Black Gun Type: Pistol Attachment Type: Screw Blade Height: 0.3 in Front Blade Height: 0.305 in Rear Blade Height: 0.31 in Illumination Color: Red Condition: New Quantity: 1 Features of Zaffiri Precision Suppressor Height HD Sights NOTE Does not fit Glock MOS G42 or G43 Front Sight uses standard hex driver. Rear Sight uses 1/16in Allen wrench for set screw. Front Sight: 0.305in Serrated Tall and Stainless Steel screw Rear Sight: 0.310 Serrated Tall with 0.125in Wide 6-40 x 1/4in rear set screw Package Contents: Zaffiri Precision Suppressor Height HD Sights Zaffiri Precision SUP.Sights: Suppressor Height HD Sights Black Anodized w/Red Fiber