Magnetic Boresighter Arrows The 578 also features the

The 578 also features the GLS

- Fits: Sig Sauer P220 American Single Action Only (P220

Thin laminate of Cordura nylon

Also an ideal hook for chunking for tuna and halibut

Magnetic Boresighter Arrows The 578 also features theDial 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.