GLCK 20 21 20SF 21SF GEN 1-3 GRN

? For: For Glock 20, 21, 20SF, and 21SF (GEN 1?3) ? Completely internal: Keep your favorite holster for your For Glock, keep your tactical lights or your favorite grips. ? Extremely rugged: The LaserMax Guide Rod Laser for For Glock meets or exceeds both Mil-Spec and Homeland Security durability test standards (drop tests, blowing sands, temperature and humidity extremes, salt water fog, deep water immersion, 20,000+ rounds live fire). ? Installation takes minutes: If you can field strip your For Glock, you can install your LaserMax Guide Rod Laser sight?no gunsmithing to your For Glock required. ? Hi-Visibility Pulsing Beam: A pulsing laser beam gives effortless awareness of muzzle and transcends language barriers. It can be used outdoors from dusk until dawn or indoors around the clock. ? Alignment: All Guide Rod Lasers come pre-aligned from the factory at 20 yards. It will never come out of alignment and there is no need to re-zero after battery changes. ? Accuracy: As close to the bore of a For Glock as possible, positioning allows for the closest and most consistent relationship between your point of aim and point of impact (POA/POI) over all shooting distances. ? Turn it on: Ambidextrous Controlled Activation? in the custom take-down lever that very closely resembles the factory For Glock take-down lever. ? LaserMax Green Guide Rod lasers. High performance has never come with such a high degree of reliability.