Pro+ Ar-15 Lock Block

The Pro+ AR-15 Lock Block by Otis Technology is a specialized maintenance tool designed to lock and stabilize AR-15 upper and lower receivers during field stripping, cleaning, and assembly operations. Built for law enforcement, military personnel, and serious shooters who demand precision maintenance, this lock block eliminates the need for improvised clamping solutions or potentially damaging work methods.

Otis Technology engineered the Pro+ AR-15 Lock Block with precision-machined construction to securely grip AR-15 receivers without marring finishes or introducing damage that compromises zero or durability. The design accommodates both mil-spec and commercial receiver dimensions, making it universally compatible across modern AR platform configurations. Its compact footprint keeps it deployable in range bags, maintenance kits, and mobile armorer setups without bulk penalty.

The rigid construction provides the mechanical advantage needed to separate receivers safely and hold components stationary during trigger group work, bolt carrier cleaning, and barrel installation tasks. This tool benefits armorers, range officers, and dedicated competitors who perform regular maintenance on multiple rifles and demand repeatable precision.