The CMMG Conversion Mag is designed to enhance your AR15MK4 with seamless adaptability allowing you to switch to a .22 LR caliber with ease. This magazine offers a 10-round capacity making it perfect for practice sessions and target shooting. Its sleek black finish complements your firearm while ensuring durability and reliable performance. Ideal for those looking to maximize the versatility of their AR-15 platform this magazine provides a practical solution for economical shooting.