For : Glock 20, 21 Finger Groove Rail And 21 Sf (will Not Fit The New Inventorytyp : Reg Vendor Group : Lmi Product Description Description: Internal Laser Sight 635mm high brightness sight. Totally internal, cannot be knocked out of alignment. No permanent modification to gun. Easy installation. Drops into place. No need to change holster. Compatible with your favorite grips. Ambidextrous switch in custom takedown lever. Deliberate on/off switch. Pulsating beam. Factory aligned. Additional Information: 635nm Laser Sight Glock 20/21 Models with Finger Groves and Rail Manufacturer: Laser Max Item#: ACU-LMS-1151PFGR Low Stock $341.99 Quantity Prices for internet orders only. Not all products available in store. Overall Customer Rating:  Rate This Item   |  Write a Review Related Items AR-536 5x36mm Tactical Prism Sight Ballistic/CQ Reticle Matte Bl $395.99 Laserguard Series Lasergrip For Glock 19/23/25/26/27/28/32/33/36 $233.99 Red Laser Accessory Module For Vertical Foregrip MVF-515 $209.99 Propoint 1x42mm Sight Illuminated 5 MOA Red Dot Reticle Matte Bl $52.99 Reflex RX01 with 4.5 MOA Amber Dot Reticle Specially Designed fo $474.99 Tru-Point Open Red Dot Sight 1x26mm 4 MOA Reticle Matte Balck $299.99