Upgrade Your AR With the SIG MCX-SPEAR LT Upper Kit


SIG Sauer developed the MCX-SPEAR LT for the special forces community. Now the SIG MCX-SPEAR LT Upper AR Conversion Kit offers an upgrade befitting the warfighter, turning a basic AR into a purpose-built machine.

The kit adapts with an M4/AR-15-Spec lower assembly. It features a dual-rod recoil assembly, eliminating the need for a buffer system. An M4 Adapter allows for Picatinny rail folding stock systems.

An included adjustable gas system enables turning the upper for suppressor optimization. A quick-change barrel design allows for easy caliber swaps and/or different barrel lengths. Better still, SIG boasts 20,000-round capability before any part replacements.

The complete upper kit retails for $1,699.99. For more info, visit sigsauer.com.

MCX-SPEAR LT Upper AR Conversion Kit Specs

  • Caliber: 7.62×39, 300 BLK, 5.56mm
  • Barrel Extension: MCX
  • Barrel Length: 16, 11.5, 9 inches
  • Barrel Rifling Type: Hammer Forged
  • Bolt Carrier Finish: DLC
  • Chrome Lined: No
  • Color: Black
  • MSRP: $1,699.99

On January, 13, 2022, Ballistic reported:

SIG Sauer just announced an awesome expansion to its MCX series of rifles. The new SIG MCX-SPEAR, chambered in 277 SIG FURY, brings to market a rifle developed with direct input from the U.S. military. The MCX-SPEAR delivers more power, distance and accuracy, according to SIG, greatly advancing beyond the current M4 in service.


“This is a rare opportunity for passionate consumers to own a piece of history,” said Ron Cohen, President & CEO, SIG SAUER, Inc. “This first production run MCX-SPEAR, and all of the revolutionary technology behind its development, is being offered to the commercial market in a configuration that is a near match to our NGSW-R submission. Further, this is the only rifle submission to the program that is designed and engineered in the United States by a company with the manufacturing scale and proven adherence to military-grade quality requirements – which is a tremendous source of pride for everyone at SIG SAUER.”

The MCX-SPEAR comes as an adaptable, multi-caliber rifle. It chambers 277 SIG FURY, 6.5 Creedmoor, or 7.62 NATO with a barrel change. It features rear and side non-reciprocating charging handles. The rifle comes with a six-position folding stock, ambidextrous fire control, bolt catch and magazine release. A two-stage match trigger, two-position adjustable gas pistol and lightened free-float M-LOK handguard add tremendous versatility. A full-length Picatinny rail and two 20-round magazines complete the package.

Loaded with enhancements, the SIG MCX-SPEAR brings the Army's new rifle to market.

Future is Now

“The revolutionary SIG FURY ammunition is the most technically advanced leap in smalls arms ammunition in over 150 years, this turns your intermediate rifle platform into magnum performance without the added weight or length while still using 20-round magazines,” added Cohen.

The 277 SIG FURY comprises the commercial variant of the 6.8×51 military round in the hybrid case technology, submitted to the U.S. Army NGSW program. SIG also makes a traditional 277 SIG FURY cartridge.

Full length view of the SIG MCX-SPEAR.

“The final component of this special-edition offering includes the SLX Suppressor. The design of the SLX suppressor is optimized to dramatically reduce harmful toxic backflow and features our patented QD attach/detach system making installation of the suppressor a game-changing level of ease,” said Cohen.

The SIG SLX series of suppressors reduce toxic fume inhalation by the end-user, according to SIG. It also reduces sound, available commercially for 5.56, 7.62 NATO and 277 SIG FURY. The SLX suppressors feature a monolithic core construction in Inconel. They come with an internal multi-flow path to exhaust gasses at a high rate. The system lower toxic fume inhalation, reduces sound and flash, and comes with the option for anew Clutch-LOK QD mounting system.

The SIG MCX-SPEAR comes with a SIG suppressor.

SIG MCX-SPEAR Package Specs

  • Caliber: 277 SIG FURY / 6.8 x 51
  • Overall Length: 34.1 inches
  • Height: 7.97 inches
  • Overall Width: 2.98 inches
  • Barrel Length: 13 inches
  • Barrel Twist: 1:7
  • Weight (w/magazine): 8.38 lbs.
SIG FURY Ammunition:
  • 277 Sig FURY 135 Gr FMJ Bullet – Standard Brass Case
  • 277 Sig FURY Elite Series Accubond 150 Gr Nosler Accubond Bullet – Hybrid Brass/Stainless Steel Case
SLX Suppressor:
  • Caliber(s): 5.56 or 7.62 NATO
  • Finish: High Temp Cerakote
  • Core Material: Inconel
  • Diameter: 1.67 in.
  • Overall Length: 5.24in./7.49 in.
  • Weight: 8.8 – 19.4 oz.
  • Attachment Type: Clutch-LOK QD or Direct Thread

Look for a full report on the new MCX-SPEAR in an upcoming issue of Ballistic Magazine. Get your copy at OutdoorGroupStore.com.

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Source link: https://www.athlonoutdoors.com/article/sig-mcx-spear/ by Ballistic Staff at www.athlonoutdoors.com