Need an updated way to mount some accessories to your HK MP5? Midwest Industries has you covered! This rail is designed to fit 9mm receivers, there may be fitment issues with the 40cal/10mm receivers. Easy no gunsmith install, all tools included Allows the user to mount an optic and a light or laser while retaining the factory handguard Forward M-LOK slot allows mounting of additional accessories Patent pending rock solid design Weight 4.6 oz Constructed of 6061 aluminum, hard coat anodized for a lifetime of service 100% Made in the U.S.A., 922R Compliant MI Lifetime Warranty Mfg: Midwest Industries