The SAP Two Round Holder allows for quick access to two additional rounds and is specifically designed for .223 caliber with case bodies 0.340" to 0.440" in diameter.
This holder can be attached to almost any rifle near the ejection port using the supplied industrial-strength Velcro, which requires a clean surface prepped with rubbing alcohol for optimal adhesion.
The product comes in O.D. Green, has a capacity of 2 rounds, and is manufactured by Short Action Precision Inc, categorized under Extra Round Holders.