Primary Arms

The SLx MD-21 is an advanced micro dot sight that incorporates the latest technologies and materials to deliver exceptional CQB performance. Weighing only 5 ounces, the SLx MD-21 is both lightweight and rugged, featuring upgraded mounting hardware for guaranteed rigidity and precision when you need it most. Features : - Fully Multicoated Lens - Top Mounted Push Button Controls - Ultra Bright ACSS-CQB Reticle with 4 Selectable Modes - Night Vision Compatibility - Shockproof and Waterproof Aluminum Construction