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SIG MCX-SPEAR LT IR 5.56 NATO 16-Inch Rifle
$1,599.99
The SIG MCX-SPEAR LT IR 5.56 NATO 16-Inch is a semi-automatic rifle featuring a short-stroke gas-piston system, 16-inch cold-hammer-forged barrel, 1:7 twist, adjustable gas system, fully ambidextrous controls and telescoping/folding stock. The RMCX-556N-16B-IR configuration is distinguished by SIG SAUER’s Reduced IR Signature Gen II FDE Cerakote finish.
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SIG MCX-SPEAR LT IR 5.56 NATO 16-Inch Rifle
The SIG MCX-SPEAR LT IR 5.56 NATO 16-Inch is a semi-automatic rifle built on SIG SAUER’s lightweight MCX-SPEAR LT architecture.
The standard configuration is identified as RMCX-556N-16B-IR and combines a 16-inch barrel, short-stroke gas-piston operating system and folding/telescoping stock with SIG’s distinctive Gen II NiR FDE Cerakote finish.
SIG MCX-SPEAR LT IR 5.56 NATO Overview
The IR version shares the core architecture of the MCX-SPEAR LT while using a reduced-infrared-signature exterior treatment.
SIG describes the finish as Reduced IR Signature Gen II FDE Cerakote, developed to reduce visibility under certain thermal and night-view conditions while also providing wear and corrosion resistance.
The platform also incorporates fully ambidextrous controls, including the safety selector, magazine release, charging handle and bolt catch/release.
For additional firearm specifications and model references, browse the Gunvexa firearm reference catalog.
16-Inch Cold-Hammer-Forged Barrel
SIG equips this rifle with a 16-inch cold-hammer-forged steel barrel.
The 5.56 NATO barrel uses a 1:7 twist rate and factory 1/2×28 tapered-shoulder threading.
A SIG suppressor-ready QD flash hider is part of the factory configuration.
MCX-SPEAR LT IR Key Specifications
- Manufacturer: SIG SAUER
- Model: MCX-SPEAR LT IR
- Standard SKU / MPN: RMCX-556N-16B-IR
- Standard UPC: 798681699698
- Firearm type: Rifle
- Action: Semi-automatic
- Caliber: 5.56 NATO
- Operating system: Short-stroke gas piston
- Barrel length: 16 inches
- Barrel construction: Cold hammer forged
- Barrel material: Steel
- Twist rate: 1:7
- Muzzle: Factory threaded
- Thread pattern: 1/2×28 tapered shoulder
- Factory muzzle device: SIG suppressor-ready QD flash hider
- Gas system: Adjustable
- Forward assist: Yes
- Stock: Telescoping/folding
- Stock hinge: Push-button locking
- Grip: AR-compatible reduced angle
- Trigger: SIG 2-Stage Matchlite Duo
- Trigger shape: Flat
- Forend: Alloy
- Accessory interface: M-LOK / Picatinny
- Magazine pattern: AR-15
- Factory magazine: One 30-round polymer magazine
- Controls: Fully ambidextrous
- Safety: Ambidextrous
- Charging handle: Ambidextrous
- Magazine release: Ambidextrous
- Bolt catch/release: Ambidextrous
- Color: Flat Dark Earth
- Receiver finish: Gen II NiR FDE Cerakote
- Overall length: 35.1 inches
- Collapsed length: 32.5 inches
- Folded length: 26.5 inches
- Overall width: 2.7 inches
- Height: 7.6 inches
- Published weight: 7.5 lb
- Barrel/handguard family: MCX-LT compatible
- 10-round compliant SKU: RMCX-556N-16B-IR-10
- 10-round UPC: 798681699704
SPECIFICATIONS
| Manufacturer | SIG Sauer |
|---|---|
| Model | MCX-SPEAR LT IR |
| Type | Semi-Automatic Rifle |
| Caliber | 5.56×45mm NATO |
| Barrel | 16" Cold Hammer-Forged Barrel |
| Operating System | Short-Stroke Gas Piston |
| Handguard | Lightweight M-LOK Handguard |
| Stock | Folding / Telescoping Stock |
| Finish | Gen II Reduced-IR-Signature FDE Cerakote |
| Condition | Brand New |
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
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