The correct spark plug and gap is crucial to proper ignition. Spark discharge is a breakdown in the air insulator between the electrode and ground. Yes - air is an insulator, a pretty good one at that. As voltage builds at the electrode, atoms in the air within the air gap gain electrons. This process is called ionization.
It's one of the reasons why our standard lenses are polycarbonate (thinner than standard lenses typically sold by other eyeglasses retailers). At Warby Parker, you can upgrade to high index lenses for an additional $30 whereas it typically costs $60 to $100 more.
Tags: 1-6x24mm, Vortex Optics. New for 2015 from Vortex Optics is the Strike Eagle 1-6x24mm tactical scope. The 1-6x scopes have been available for few years now but those are usually cost $1400-$2500. The new Vortex Strike Eagle will be a departure from that with its budget minded $400 or under street price.