Product DescriptionThe AimShot MBS9 Modular 9mm Laser Bore Sight is engineered to make zeroing faster and more efficient for 9mm Luger firearms. This latest version includes a modular battery system: use the compact watch batteries for closed-chamber setups, or switch to the external battery pack powered by two AAA batteries for extended 20+ hour runtime. The external pack features a small magnet to secure it to the receiver while you dial in optics. Built from brass and emitting a red 650nm laser, the MBS9 provides reliable alignment for semi-automatic pistols and pistol-caliber carbines.Product HighlightsModular power system with both watch batteries and external AAA battery packExtended runtime of 20+ hours using 2 AAA batteries; quick setup for longer sight-in sessionsRed 650nm laser designed for precise bore sighting of 9mm Luger firearmsExternal battery box with magnetic mount for secure positioning on the receiverDurable brass construction for accuracy and longevitySpecsCaliber: 9mm LugerLaser Wavelength: 650 nmBeam Color: RedMaterial: BrassPower Options: External pack (2x AAA batteries); internal button cell (L736)Runtime: 20+ hours with external AAA battery pack; approx. 10 minutes on internal batteriesIncludes: Watch batteries and end cap; external battery pack with magnetic mountBrand: AimShotMPN: MBS9UPC: 669256022381Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.