"The Adcor Defense B.E.A.R. combines a new piston system with an exclusive ejection port dust wiper with cover, an ambidextrous forward-placed charging handle/forward-placed assist, and a new key-locked, highly rigid rail system," said Jimmy Stavrakis, president of Adcor Defense Inc. of Maryland.
"More importantly, this innovative design will increase reliability and eliminate the soldier's most common cause of weapon failure -- jamming due to operation in harsh, dirty environments."
After a typical AR carbine fires, the weapon is susceptible to contaminants because the ejection port door remains open until it is manually closed. Dust, sand and debris can enter the receiver and work in between the receiver and bolt, potentially jamming the carbine. Contaminants also create wear and maintenance issues.
Adcor said its patent-protected design solves the problem with a spring-loaded dust cover mounted on the carbine's bolt carrier: Each time the weapon fires and the bolt carrier returns to the ready position, the dust cover moves into the ejection port opening, flush with the outside geometry of the carbine.
No dust, sand or debris can enter the weapon.
The design of Adcor 's gas piston system and operation rod completely eliminates carrier tilt, ensuring reliability by preventing hot gases and carbon particulates from entering the receiver and fouling the chamber and the action.
Adcor said the B.E.A.R. also features a rail system compatible with all M4 accessory items, such as optical sights, image intensification sights, thermal sights, laser targeting systems, bipods, tactical lights, and Multiple Integrated Laser Engagement System.
The Army is planning a competition for a replacement rifle for the M4.