Sig Sauer M400 Coil V2 TREAD 5.56mm Semi-Auto Rifle with ROMEO5 Gen II Optic and Stainless Barrel

The Sig Sauer M400 TREAD is a highly configurable, duty-ready AR-15 platform built for durability and ergonomic versatility. Chambered in 5.56 NATO, it pairs a 16″ stainless steel barrel and mid-length gas system with a free-floating M-LOK enhanced handguard for a rigid, accessory-friendly mounting surface. The rifle includes a SIG Matchlite 2-stage trigger and a MAGPUL SL-K 6-position stock for an adjustable, shooter-specific fit, plus ambidextrous controls and lower-receiver QD mounts for fast sling attachment.

Firearm Features

• Romeo5 Gen II Compact Red Dot Sight
• M-LOK Vertical Foregrip and Barricade Stop
• 16” Stainless Steel Barrel
• Tread Enhanced M-LOK Handguard
• SIG 2-Stage Matchlite DUO Trigger
• Mid-Length Direct Impingment Gas System
• 6 Position MAGPUL SL-K Stock
• Ambidextrous Saftey and Mag Release