The Hardline 4-16x42mm SFP Rifle Scope from Crimson Trace puts the rugged durability and stability of a 30mm chassis in your hands, with multiple reticle options. You can be sure that you can trust the chassis, and the reticle downrange. The Crimson Trace Hardline 4-16x42mm SFP Rifle Scope allows you to choose either the BDC .223/5.56 or the BDC Long Range reticle, so you can marry the reticle to the platform the scope is going on. It's nice to have options, especially when those options allow you to improve your downrange accuracy. 42mm objective lens Weight - 20 ounces Eye relief - 3.7" The Hardline 4-16x42mm SFP Rifle Scope puts a premi Mfg: Crimson Trace Corporation