Sig Sauer MCX SPEAR-LT, Semi-automatic Rifle, 223 Remington/5.56 NATO, 16″ Barrel, Black

Product Description

The Sig Sauer MCX SPEAR-LT is a semi-automatic rifle in .223 Remington/5.56 NATO with a 16″ barrel and a 30-round capacity. It wears a black anodized finish and comes from Sig’s MCX line.

The “LT” is about weight and handling. Sig gives it a lightened handguard that uses attachment screws for added rigidity, plus a lightened profile barrel. The handguard is 13″ long and uses M-LOK, so you can add accessories only where you need them. The stock folds to the side and is built to be minimal, which keeps the rifle compact when folded.

Controls and Trigger

Every control is fully ambidextrous, including the bolt catch and release on the lower. That helps left-handed shooters and anyone who switches shoulders. The rifle has a Sig Flatblade Match Trigger, and Sig states it is compatible with AR15 style triggers. Barrels are interchangeable, and the flash hider is a Sig QD suppressor-ready design.

This rifle fits someone building a light, compact carry or range rifle. Common add-ons include M-LOK lights, grips and rail sections, a sling, and an optic. Extra 5.56 magazines are worth having for range days. If you plan to run a suppressor, the QD flash hider is made for it. Pick your own gear to fit how you shoot.

Sig Sauer MCX SPEAR-LT, Semi-automatic Rifle, 223 Remington/5.56 NATO, 16" Barrel, Black Specifications

What’s in the Box

1 Magazine (per the manufacturer’s listing).

Fits and Pairs With

• Armscor 223 Remington, 55 Grain, Pointed Soft Point, 20 Round Box
• Barnes VOR-TX, 223 Rem, 55 Grain, 20 Round Box
• Berger Bullets Target, .223 Remington, 73 Grain, 20 Round Box
• Speer Ammunition Speer Gold Dot, 223 Remington, 75 Grain, Gold Dot Soft Point, 20 Round Box
• DoubleTap Ammunition Target, 223 Remington, 55Gr, FMJ Boat Tail, 50 Round Box
• Fiocchi Ammunition Rifle, 223 Remington, 55 Grain, 50 Round Box

Ordering from Western Sport

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 MCX SPEAR-LT?

A: It is chambered in .223 Remington/5.56 NATO. This model has a 16" barrel.

Q: How many rounds does the MCX SPEAR-LT hold?

A: 30 rounds. It is a semi-automatic rifle.

Q: Does the MCX SPEAR-LT have a folding stock?

A: Yes. It has a side-folding stock that Sig designed to be minimal so the rifle folds compact.

Q: Is the MCX SPEAR-LT ambidextrous?

A: Yes. The controls are fully ambidextrous, including the bolt catch and release on the lower.

Q: Can the MCX SPEAR-LT use a suppressor?

A: Yes. It has a Sig QD suppressor-ready flash hider.

Warranty and Manufacturer

Covered by the Sig Sauer factory warranty; warranty terms come from Sig Sauer.

Additional information