Radian Weapons Glock MOS Radian EPS Guardian Optic Guard Black. Machined from 7075 aluminum and hard anodized the design provides top/front/side impact protection. STUD-LOK threaded stud/nut mounting interface is a secure system. It provides much longer thread engagement greater hold down power with increased shear resistance. TRU-SEAL eliminates the need for an added sealing plate. Pre-installed O-rings on the mounting screws hold the plate watertight to the slide sealing out moisture eliminating corrosion in the mounting threads. Specifications for Radian Weapons Glock MOS Radian EPS Guardian Optic Guard: Manufacturer: Radian Weapons Color: Black Finish: Hard Anodized Fabric/Material: Aluminum Gun Make: Glock Gun Model: Glock 45 MOS Glock 47 MOS Glock 41 MOS Glock 40 MOS Glock 35 MOS Glock 19 MOS Glock 34 MOS Glock 17 MOS Gun Type: Handgun Country of Origin: USA Features of Radian Weapons Glock MOS Radian EPS Guardian Optic Guard Provides top/front/side impact protection of red dot Mounts with stud-lok and tru seal o rings on mounting screw sealing out moisture Stealth back-up iron sights Package Contents: Radian Weapons Glock MOS Radian EPS Guardian Optic Guard Radian Weapons G1002: Glock MOS Radian EPS Guardian Optic Guard Black