Expansion Plugs-100pk 1.508 Dia x .625 Height

The Expansion Plugs-100pk 1.508 Dia x .625 Height by Pioneer is a precision tactical component designed for law enforcement, military, and professional shooting applications. These expansion plugs serve as critical barrel maintenance tools, protecting bore integrity during transport, storage, and between-use periods. Built to exacting tolerances, this 100-pack quantity ensures you maintain multiple rifles or support team armories without frequent reordering.

Each plug measures 1.508 inches in diameter with a 0.625-inch height, engineered to fit standard rifle bore diameters and chamber areas with precision fit. The expansion design allows secure seating without marring bore walls—critical for weapons that demand sub-MOA accuracy. Pioneer's manufacturing standards ensure consistent dimensions across all 100 units, eliminating the variability that compromises bore protection. The compact profile prevents interference with charging handles, optic mounts, or suppressor installations during storage.

Operators managing AR-15, AR-10, or other modern tactical rifles benefit most from this bulk pack, particularly in unit armories, training facilities, or long-term storage scenarios. Field-proven across military and law enforcement units, these plugs prevent dust, moisture, and debris ingress that can degrade ammunition seating and accuracy. Installation is tool-free—simply insert and twist to expand for secure hold. The 100-pack format delivers approximately 10 rifles of protection at optimal cost, making this a practical choice for serious shooters and professional teams who prioritize barrel longevity.