While fighting enemy forces, it is imperative to maintain a clear view of your target and surrounding environment and you do just that with the Firefield Reflex Sight, MG Machine Gun. Featuring the largest objective lens window on the market, this unique device was designed for close-quarter battles, offering fast target acquisition while maintaining pinpoint accuracy. Never lose sight of your objective with the Firefield red/green reflex sight. It has adjustable brightness with a choice of four reticle patterns that you choose to alter between red or green options. Additionally, the unlimited eye relief makes it a comfortable fit for most shooting scenarios. This rifle reflex sight is compact and lightweight.