Many thanks to the excellent MDL, who forwarded this along, referring to our previous post on the Army seeking a 7.62 M4. Here are the reqs:
• The rifle must be a Commercial Off The Shelf (COTS) system readily available for purchase today. Modified or customized systems are not being considered.
• Caliber: 7.62x51mm
• Available barrel lengths, to include 16 and 20 inch barrels, without muzzle device attached.
• Muzzle device capable of or adaptable to auxiliary devices for:
— Compensation of muzzle climb
— Flash suppression
— Sound Suppression
• Fire Control: Safe, Semi-automatic, and fully automatic capable.
• All controls (e.g. selector, charging handle) are ambidextrous and operable by left and right handed users
• Capable of mounting a 1.25 inch wide military sling
• Capable of accepting or mounting the following accessories.
— Forward grip/bi-pod for the weapon
— variable power optic
• Detachable magazine with a minimum capacity of 20 rounds
• Folding or collapsing buttstock adjustable to change the overall length of the weapon
• Foldable backup iron sights calibrated/adjustable to a maximum of 600 meters range
• Weight less than 12lb unloaded and without optic
• Extended Forward Rail