Trijicon® ACOG® 4x32 Scope for the M4 with TA51 Mount, 14.5" Barrel
Vortex SPARC Red Dot Scope
Firefield® FF13026 1x30mm Red / Green Dot Combat Sight
Sightmark® Triple Duty M4 1-6x24mm CDX Rifle Scope
Trijicon® ACOG® 4x32mm Scope Yellow Illumination for the M4A1 with Flattop Adapter, ...
Trijicon® ACOG® 3.5x35 Red Dual Illumination Donut Reticle Scope and BAC