G5 Outdoors Meta Peep Sights. These ultralightweight magnesium alloy peeps weigh less than half of what their competitors weigh, and even the slightest weight reduction on your string can increase your arrow speed. What's more, the internal hourglass shape helps to ensure consistent and proper alignment for any length of draw. 3/16", 4.5 grains 1/4", 6 grains