Milkor Marketing, renamed in 2007 as Rippel Effect Weapon Systems, is a firearm company known for formerly marketing the Milkor MGL grenade launcher and the Milkor Stopper 37/38 mm riot gun. Rippel Effect Weapon Systems is based in Pretoria, South Africa, not to be confused with Milkor (Pty) Ltd also based in Pretoria, South Africa which is still the original designer and manufacturer of the Milkor 40mm MGL family.