US Optics Rail Mounted Swivel Bubble Level – Aluminum, Fits 1913 Picatinny Rail (BBL-300)

• Swivel bubble level designed to assist with maintaining proper firearm alignment
• Constructed from lightweight aluminum for durability and reduced weight
• Mounts to 1913 picatinny rail systems for broad compatibility
• Swivel design allows adjustable viewing position during use
• Type three hard anodized finish enhances wear resistance
• Includes protective screw on vial cover for storage protection

The US Optics Rail Mounted Swivel Bubble Level is a scope level designed for maintaining proper rifle alignment during shooting. This scope level mounts to a 1913 Picatinny rail and uses a swivel design to provide adjustable viewing of the bubble indicator.

The US Optics Rail Mounted Swivel Bubble Level is constructed from 6061-T6 aluminum with a Type III hard anodized finish for durability. It features a swivel mechanism that allows the bubble vial to be positioned for improved visibility based on user preference. A screw-on vial cover protects the level during storage and can be secured to the opposite end during use. The mount interface attaches to standard 1913 Picatinny rails for consistent compatibility. In practical shooting setups, this scope level supports alignment verification in both range and field conditions. The US Optics swivel bubble level integrates adjustable viewing with a compact rail-mounted form factor for controlled rifle positioning.