UBL-37MM Underbarrel Launcher By Bates and Dittus

The Underbarrel Launcher, or UBL, is the B&D recreation of the M-203. It has a 12" barrel with a full length upper Picatinny rail for attachments to a Picatinny rail-equipped AR-15 style weapon.

Specifications

• Manufactured by Bates & Dittus
• Recreated to look like the 40mm military M203 grenade launcher
• 9" barrel fits perfectly under the barrel of an M4 carbine
• The mounting system attaches the UBL37 to any Picatinny-railed forend and any AR barrel configuration
• When attached to an M4 carbine, the 30rd AR magazine serves as the pistol grip