SA ONE-MAG Mid-Cap Magazine for M4 / AR15, 120 BBs – Green

Package Includes ONE-MAG M4 / AR15 Magazine 120 BBs Warnings & Recommendations A BB loader is required for filling (not included). Always store unloaded to extend spring life. For first-time use, start with 20 BBs and cycle them out. Then repeat with 40 BBs, gradually increasing until full capacity, to break in the spring properly.