Made in the USA by Magpul, This lightweight, durable and reliable single-stack bolt-action magazine fits .300 Winchester Magnum based family of cartridges and is compatible with long action AICS-spec bottom metal and Magnum cartridges built on a 0.530" belted case head. It accepts a cartridge overall length of up to 3.50". 5-round capacity magazine is made from next-generation impact and crush resistant polymer. Self-lubricating follower and long-life stainless-steel spring provide increased reliability. Paint pen dot matrix panels on the bottom of the body to allow for identification marking. Flared floor plate aids magazine handling and is easy to disassemble for maintenance. NOTE: This magazine fits the Ruger Hawkeye rifle chambered in .300 Win Mag. It does not fit the Ruger American Rifle or the Ruger Precision Rifle.