Sig Sauer M400 FORGE, 5.56 NATO, 16″ Barrel, Black, 10 Rounds, G2 10RD CA
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Home » Shop » Sig Sauer M400 FORGE, 5.56 NATO, 16″ Barrel, Black, 10 Rounds, G2 10RD CA
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$1,099.99Original price was: $1,099.99.$999.99Current price is: $999.99.
🚚 Ships to your local FFL — order online, put your FFL dealer’s name and address in the Order notes box at checkout, and we coordinate the rest. Most firearms ship same or next business day. How buying a gun online works.
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Sig Sauer M400 FORGE is a California-compliant semi-auto rifle in 5.56 NATO with a 16" barrel and a 10-round capacity. It suits California shooters who want a compliant 5.56 rifle with a red dot already mounted for range sessions and general practice.
5.56 NATO semi-auto rifle
16" cold hammer forged barrel
10-round capacity, California compliant
ROMEO-MSR Gen II 2 MOA red dot
TriggerTech 3.5 lb two-stage flat blade trigger
Ambidextrous charging handle, aluminum handguard
SKU: SGRM400-556N16BFORGECA · Mfr part #: RM400-556N-16B-FORGE-10 · UPC: 798681744138
The Sig Sauer M400 FORGE is a semi-auto rifle chambered in 5.56 NATO with a 16″ barrel. This version is built for California, with a 10-round capacity, a fixed stock, and a pistol grip with a compliant fin. The finish is matte black.
The FORGE series stands out for a few specific reasons. The barrel is cold hammer forged. The trigger is a TriggerTech two-stage flat blade rated at 3.5 lb. The rifle also has an ambidextrous charging handle and an aluminum handguard. A ROMEO-MSR Gen II red dot with a 2 MOA dot comes as part of the rifle, so you do not have to pick an optic first.
Who it suits
This rifle fits California buyers who want a compliant 5.56 NATO rifle with sights sorted from the start. A red dot is quick to pick up, which helps newer shooters and anyone who wants fast target acquisition at the range. The two-stage trigger gives a clear take-up before the break, which many people like for controlled shots. The rifle is right-handed, though the charging handle works from either side.
For gear, think about a sling, extra compliant magazines, eye and ear protection, and a basic cleaning kit. Add 5.56 NATO ammunition for the range. A padded rifle case helps with transport.
Sig Sauer M400 FORGE, 5.56 NATO, 16" Barrel, Black, 10 Rounds, G2 10RD CA Specifications
Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.
Frequently Asked Questions
Q: What caliber is the Sig Sauer M400 FORGE CA model?
A: 5.56 NATO. This model is a semi-auto rifle with a 16" barrel.
Q: Does the M400 FORGE come with a red dot?
A: Yes. It has a ROMEO-MSR Gen II red dot with a 2 MOA dot.
Q: Is this M400 FORGE California compliant?
A: Yes. It is the California-compliant version, with a 10-round capacity, a fixed stock, and a compliant pistol grip fin. Check your local rules before you order.
Q: What kind of trigger does the M400 FORGE have?
A: A TriggerTech two-stage flat blade duty trigger. It is listed at 3.5 lb.
Warranty and Manufacturer
Covered by the Sig Sauer factory warranty; warranty terms come from Sig Sauer.
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