3-round magazine 3.850" CIP length Weighs 2 ounces Sturdy, impact resistant polymer Heavy duy, non-memory and non-corrosive stainless steel spring Light & Stays quiet when inserted into magwell Fits CIP M5 bottom metal only Material able to cerakote if desired Made in the USA Fits the following calibers: 300 WIN MAG 300 Weatherby 6.5x300 Weatherby 300 PRC 7mm PRC 7mm Rem mag 264 Win Mag 26,27,28,30 & 33 Nosler 375 Ruger 375 H&H 7mm, 30, 338 & 375 Ultra Mag