H&K AG-C/EGLM A 40mm grenade launcher, the AG-C/EGLM can mount onto most AR’s but will fit other rifles with some rail adapters or modification. Very rare to find one for sale as H&K seldom releases their grenade launchers to private citizens. Legendary H&K collector Bo French from Texas has (or had, I think he sold it) an H&K 69, an older 40mm single shot grenade launcher. Note that it has the simple wire tube style stock to shoulder and use if not attached to a rifle. If you’re curious on price, contact Auto Weapons online.