New: SIG Sauer MCX-SPEAR LT

As the third generation of SIG’s MCX platform, the new MCX-SPEAR LT builds on the Virtus

by
posted on September 20, 2022
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Mcxspearlt 1A
SIG Sauer

SIG Sauer’s new MCX-SPEAR LT rifle marks the third generation of the company’s MCX platform. Available in three calibers: .300 Blackout, 5.56 mm NATO and 7.62x39 mm, the latter is making its first appearance in the MCX rifle family.

SIG MCX-SPEAR LT
The SIG Sauer MCX-SPEAR LT rifle weighs between 5.6 and 7.6 pounds, depending on the model. All have a Coyote Anodized finish.

The MCX-SPEAR LT is an aluminum frame rifle with a gas piston operating system and a cold-hammer forged carbon steel barrel. Available barrel lengths are nine inches (.300 Blackout), 11.5 inches (7.62x39 mm and 5.56 mm NATO) and 16 inches (7.62x39 mm and 5.56 mm NATO).

A new latch system was developed for the MCX-SPEAR LT so that it can cycle many types of 7.62x39 mm ammo reliably.

The SIG QD suppressor-ready flash hider is optimized for SIG QD suppressors, and there is also a SIG flatblade match trigger. Additionally, the MCX-SPEAR LT will accept AR-15 style triggers.

With a lightweight ergonomic handguard and push-button folding stock with cheekrest, the MCX-SPEAR LT rifle also has fully ambidextrous controls including bolt catch and release.

In addition, this rifle is optics ready, and can be quickly paired with a SIG Sauer ROMEO8 or TANGO6T optic.

About the design of the new MCX-SPEAR LT, SIG Sauer says it “incorporates the best of both generations and is the culmination of the latest research, development and innovation in the MCX platform.”

Learn more about the SIG Sauer MCX-SPEAR LT rifle at sigsauer.com.

Latest

2025 WAPC Results 2
2025 WAPC Results 2

Results: 2025 World Action Pistol Championship

Doug Koenig wins eighth World Action Pistol Championship; Team USA sweeps podium and captures team world title in Hamilton, New Zealand.

Looking Back At The 2014 Bianchi Cup Action Pistol Championship

From the vault: Our coverage of the 2014 Bianchi Cup Championship, where Kevin Angstadt won the title for the first time.

Hancock and Simonton Crowned 2025 ISSF Shotgun Athletes of the Year

Vincent Hancock and Samantha Simonton earned 2025 ISSF Shotgun Athlete of the Year honors, highlighting a dominant week for Team USA in Doha.

What’s In Your Range Bag, Mike Hwang?

IPSC medalist Mike Hwang breaks down his range bag gear, shooting setup and key tips for new and competitive shooters.

Six Medals for Team USA at the 2025 ISSF World Cup Final

USA Shooting’s shotgun squad owned the 2025 ISSF World Cup Final, delivering dominant performances across skeet and trap and collecting a haul of hard-earned medals.

Doug Koenig: Eight-Time World Action Pistol Champion Talks Victory and 2026 Plans

Doug Koenig recounts his eighth World Action Pistol Championship win in New Zealand, training adjustments, travel challenges and 2026 plans.

Interests



Get the best of Shooting Sports USA delivered to your inbox.