This is a Black Spider LLC Mount, model 0129LM.
Black Spider Optics was formed to fill the void in the market for high-quality" affordable optics and mounts that look great and perform exceptionally well. Because of their commitment to Customer Satisfaction" Technical Support" and Product Warranty" it's no surprise that the U.S. Military" Law Enforcement" Hunters and Enthusiasts alike choose Black Spider Optics!
Features:
High quality
Affordable