Glock .40 S&W Gen 4-5 Factory Original Magazine Insert

The Glock Gen 4-5 .40 S&W Magazine Insert rests inside the magazine body under the spring to help ensure proper operation. The OEM replacement part is compatible with Generation 4 and 5 .40 S&W magazines, and it is made from high-strength polymer that resists damage and wear from continuous shock and impact. Whether you’re repairing a damaged magazine or stocking up on spare parts, get a few backup mag inserts from GunMag Warehouse today.