Save time, money and frustration by getting on paper with your first shot with our Cabela's Professional Chamber Pistol Boresighter. Machined to the highest standards of S.A.A.M.I. specifications to ensure the highest accuracy, this boresighter automatically turns on when chambered in your firearm with a closed action, projecting a straight laser beam onto your target and allowing for precise sight adjustments. This boresighter is perfect for the range and ensuring your gun is still zeroed-in after travel. Made in USA. Professional-grade boresighter Precision-machined Automatically powers on and aligns with the barrel Fits in the chamber with the action closed