Been thinking about picking up the Vortex micro 3x along with my Crossfire red dot for a bit now. Thanks to the fellow Redditor who gave me the push to buy it :
Lightning Review: Vortex Micro6x Magnifier - See Further And See More -The Firearm Blog
Vortex Micro 3x Magnifier V3XM B&H Photo Video
Vortex Micro3X Magnifier Review | The Hunting Gear Guy
Vortex Micro 3x Magnifier Review: How Micro Is It? | RECOIL
Vortex SPARC Solar Red Dot Sight, 1 x31mm, 2 MOA - 1 out of 5 models
Amazon.com : Vortex Optics Micro 3x Red Dot Sight Magnifier with Quick-Release Mount : Sports & Outdoors