Keltec RDB Bullpup 5.56 NATO Black 20rd

The Keltec RDB is a compact, ambidextrous bullpup semi-automatic rifle chambered for .223 Rem / 5.56 NATO. It uses a patented downward-ejection system to keep spent cases and gas out of the shooter's line of sight and features an adjustable gas piston for use with a variety of loads and muzzle devices. The RDB accepts standard AR-15 magazines and is fitted with a black polymer fixed bullpup stock and MIL-STD-1913 Picatinny rails for accessories.

Designed for users who prioritize compact balance and ambidextrous controls, the RDB is suitable for precision-oriented shooting and general modern sporting use where a shorter overall package is desired.

Key Specifications

• The caliber is .223 Rem / 5.56 NATO.
• The action is Semi-Automatic.
• The magazine capacity is 20 rounds (AR-15 compatible).
• The stock material is black polymer.
• The unloaded weight is 6.7 lbs.
• The overall length is 27.3 inches.
• The barrel twist rate is 1:7".
• It features a fully adjustable gas piston system for reliable operation with various loads and suppressors.
• The rifle uses a downward ejection system for true ambidextrous operation.
• The muzzle is fitted with a birdcage-style flash hider.

The RDB delivers a balance of compact handling and functional design without compromising ergonomics. Its downward-ejection architecture and adjustable gas system make it a practical choice for shooters who need a well-balanced, ambidextrous modern sporting rifle that accepts common AR-15 magazines. Built with a durable polymer stock and integrated railwork, the RDB is ready for accessory mounting and varied field use.