This is a factory 10-round .22 LR Chiappa M4 magazine. Upgrade your favorite plinker with the Chiappa M4 .22 LR 10-round magazine. Featuring a stainless steel spring and polymer follower, this Chiappa M4-22 magazine ensures reliable and smooth feeding in any situation. Additionally, lightweight and durable polymer construction delivers lasting service and corrosion resistance in adverse conditions. The specialized loading button on the side facilitates effortless reloading and proper round stacking, and the loading channel allows for quick, visual round counts at a glance.