Aim-O 551 Red/Green Dot (DE)
Metal Construction (Hard anodized surface)
Replica of Holographic Red/Green Dot Sight
Manual Adjustment Mode offer brightness adjustment for both red/green dot
QD Throw-Locking Lever System for fast install / detachment
Mount on any 20mm weaver standard rail
Easy Hook Up, Install in just seconds
Operated by AA battery (Not Include)

size: 105x49x64mm