XRGL40

The MGL-140 was introduced in 2005 by Milkor USA. It features a Crane-style Vltor Modstock, a "SOPMOD Tan" finish, and a weighted two-stage trigger. It has a 140 mm (5.5 in) long chamber designed to accept all lengths of standard low velocity 40x46mm grenades including the new Hellhound "hyper-lethal" wide blast radius ammunition manufactured by Martin Electronics Inc (MEI). The MGL/Hellhound combo is being touted as a significant improvement over traditional grenade launcher systems. In late October 2005, the United States Marine Corps awarded Milkor USA a contract to produce some 200 MGL-140 launchers, featuring unspecified modifications made at the USMC's request. The order was manufactured in the United States by Milkor USA Inc. This new version, designated M32 Multiple Grenade Launcher, was deployed to Iraq in March 2006 for testing with all Marine battalions.

The latest version introduced in 2007 is the XRGL40 named for its extended firing range of 800 m it offers over the standard 375 m. It uses a new "extended range low pressure" (ERLP) 40x51mm grenade that launches at 125 m/s (410.1 ft/s) instead of the standard 76 m/s (249.3 ft/s) without an increase in chamber pressure. It remains compatible with conventional 40x46mm grenades. In addition to this change, it is also slightly lighter and has a modified sight (with laser rangefinder).