The Astra features a rectangular index mirror, available with either a traditional half-silvered (split) or whole (full) horizon versions. The mirrors are easily interchanged, so if you don’t know which to choose, start with the whole horizon type. It’s a little easier for beginners to use, and you can always change it later. Other features include LED lighting of arc and drum, oil, adjusting wrench, and instructions, all in a varnished wooden case. A 3.5 x 40 scope is standard.