Perfectly rugged and simple - Trijicon TA31RCO-M4 ACOG 4x32 USMC M4 Rifle Scope w/ TA51 Mount &

This RCO model includes the flash hider and mount. Got it with the red chevron, which in my opinion works reasonably well for close shots once you've practiced on it if you don't have access to a mounted red dot. I ended up buying a rear-shifting mount to help with eye relief given the fixed stock I have to have in NJ. Thought about the TA02 but liked the lower weight of this option.

If this is your first ACOG you will be impressed by the build quality. Recommend learning about how to use the range estimation and BDC features of the reticle. Nothing is without compromises, but well worth the money.