Magnetic Boresighter Brass - Lens System: f/1

- Lens System: f/1

The patented SERPA Technology lock engages the trigger guard as you holster the pistol and won't let go until you release it

- Front Sight Post

Pistol Grip:

- Powered by (3) "AAA" alkaline batteries LED battery indicator on back

Magnetic Boresighter Brass - Lens System: f/1Dial in your firearm fast and easy with the new Weaver Magnetic Boresighter. This handy tool makes quick work of scope sight ins saving you time, money and the headache of wasting rounds while you try to zero your firearm. The unit magnetically attaches to most firearms and features an internal target for rapid adjustments. Simply align your scope's reticle with the boresighter's specialized internal target for reliable preliminary sight in.