Originally Posted by Thx-1138
H1? Err... I'm lost, now.
Wait... (google google google).... Buffer something or another?
IF, for some godforsaken reason, I decided to go with a not-quite-complete upper and marry it with a complete lower, AND I decided to go with a 14.5" barrel with some sort of pinned barrel thing on the end... would the H1 still be the right choice?
OMG.... I can feel myself slipping into the abyss...
He is referring to the Aimpoint H1. It's the most compact and lightest Aimpoint available.