Milsig M66 LL 42mm Less-Lethal Launcher (70–100+J)

Adjustable 42mm performance for professional training and authorized operational use.

The Milsig M66 LL is a full-power, professional-grade 42mm multipurpose launcher built around a compact folding-barrel design. Its semi-automatic GL HeatCore system can operate from HPA or CO2 and is adjustable across a broad output range to support compatible mission-specific cartridges and manufacturer-approved projectiles.

Variable Power

• Approximately 70 joules for compatible standard operational projectiles
• Up to 100+ joules for approved heavy-projectile applications
• Lower 20–30 joule settings for jurisdictions, training plans, or approved payloads that require reduced energy
• Sport and field settings below 20 joules when configured and chronographed for applicable rules

Modular 42mm Platform

• 42mm folding barrel for compact transport and fast loading
• Compatible with approved 42mm cartridges and inserts
• Supports compatible 40mm, 17mm, 6mm, .68-caliber, and 36mm adapter systems
• MATS stock is compatible with a 13ci HPA tank
• Semi-automatic GL HeatCore operating system
• Adjustable output range: approximately 7.5 to 100+ joules

Power & Configuration

• Propellant: HPA or CO2
• Base caliber: 42mm modular
• Operating system: GL HeatCore, semi-automatic
• Approximate net platform weight: 2.5kg / 5.5 lb
• Catalog shipping weight: 8 lb

Tank, cartridges, inserts, and projectiles are sold separately unless expressly listed in the package contents.

Legal & Safety Notice

Less-lethal does not mean non-lethal. This launcher is intended for lawful training, sport, and authorized operational use. Classification, possession, and use requirements vary by jurisdiction and may include permits or prohibitions. The purchaser is responsible for verifying applicable laws before purchase and use. Use only manufacturer-approved cartridges and projectiles, wear appropriate eye and face protection, and follow established range or training protocols.