The M400 Sentry is SIG’s ready-to-run defensive carbine package. A free-float M-LOK handguard, Magpul MOE-SL stock and factory-mounted ROMEO5 Gen II red-dot come with a FOXTROT-MSR light already on the rail. It is aimed at buyers who want a complete home-defense or range AR without shopping optics and lights separately.
Key features
- 5.56 NATO; 16″ chrome/moly barrel, 1:7″ twist; flash hider/compensator
- Factory ROMEO5 Gen II red-dot (1 MOA class)
- Factory FOXTROT-MSR weaponlight (~1,250 lm per SIG kit marketing)
- Free-float M-LOK handguard; vertical foregrip; Magpul MOE-SL stock
- About 33.25–36.5″ long; about 8 lb with kit
- Ships with one 30-round magazine
Buying from PM Customs in Yukon
PM Customs is a licensed FFL in Yukon, OK, serving the Oklahoma City metro. Choose local pickup by appointment (generally Mon–Sat, 8 AM–4 PM), or have your M400 Sentry shipped to your local FFL. You pick at checkout. Questions? Call 405-265-8955.
