For: GLOCK 20, GLOCK 21 FGR

Battery Model: LMS-3x393 (readily avail able silver oxide batteries commonly used in watches)

Accuracy (20 Yards): ±2" POA

Laser Operating Temperature: 15°-120° F

Wavelength: 635nm (red-orange)

Power Output: 5mW (brightest available - blinks for highest visibility)

Spot size: at 7 yds 5/16”, spot size at 25 yds 3/4”.
If any firearm has been ported, fluted or compensated either by the original manufacturer or by a gunsmith, LaserMax will NOT guarantee alignment. Custom alignment quotes for firearms may be obtained by calling LaserMax. NATO Stock No. 1005-99-500-4480 U.S. Patent Nos. 4,934,086 & 5,509,226. European Patent No. 0431097 Other worldwide patents pending.

Please Note:
1. Expect to change your batteries once a year with typical usage.
2. Cold weather batteries are available for some models. Call Factory for details.
3. Battery operating temperature is 15°F-120°F