SIG’s M400 FORGE: 16″ cold-hammer-forged mid-length barrel with A2 birdcage, free-float M-LOK handguard, factory-mounted ROMEO-MSR Gen II 2 MOA red-dot, TriggerTech 3.5 lb two-stage flat blade trigger, ambidextrous charging handle and Magpul SL-K 6-position stock. SIG lists about 35.5″ OAL (about 32.25″ collapsed) and about 6.8 lb. Ships with one 10-round polymer magazine. Manufacturer part number: RM400-556N-16B-FORGE-10.
Key features
- 5.56 NATO; 10+1; one 10-rd polymer magazine
- 16″ CHF mid-length barrel; A2 flash hider
- ~35.5″ OAL / ~32.25″ collapsed; ~6.8 lb (SIG)
- Includes ROMEO-MSR Gen II 2 MOA red-dot
- TriggerTech 3.5 lb two-stage flat trigger
- Magpul SL-K stock; free-float M-LOK rail
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 FORGE shipped to your local FFL. You pick at checkout. Questions? Call 405-265-8955.
