ZeroTech Optics USA released the Thrive X 4-16×50 second-focal-plane riflescope with a 50mm objective for open-country hunting. It starts at 21.9 ounces in a 30mm 6061-T6 aluminum tube with fully multi-coated lenses, parallax from 10 yards to infinity, 3.2-3.35 inches of eye relief, and 28.1-foot then 6.9-foot views at 100 yards on 4x and 16x. Mildot models use 0.1 MRAD clicks with 17.5 MRAD travel; others use 0.25 MOA and 60 MOA, and G4, PHR 3 and PHR 4 add five lockable BDC markers at 22.4 ounces.