Meprolight M21 Red Dot Optic Review

The Meprolight M21 Red Dot Optic is a perfect no fuss and darn near bullet proof optic for my wife’s 300 Blackout home defense AR15. The sight requires no batteries, has no controls to fiddle with, is always on and works day or night. It is a battle proven, tough optic that will take a beating and keep working even under very harsh conditions. I’m very impressed with the Mepro M21.

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