The MCX platform has long been SIG SAUER’S breeding ground for developing the best rifle system in the world through extensive testing, continued innovation, and customer feedback. Now SIG SAUER introduces the SIG SAUER MCX-SPEAR LT 16-in Conversion Kit, allowing M4/AR15 owners to experience the SPEAR LT capabilities.
The SIG SAUER MCX-SPEAR LT Rifle represents the pinnacle of firearm innovation, delivering unrivaled performance, enhanced accuracy, and unmatched versatility. Whether for professional use, competitive shooting, or personal defense, this rifle offers an exceptional shooting experience you can rely on. Experience the evolution of excellence with the MCX-SPEAR LT.
Modernize your existing M4/AR15 lower assembly with this out-of-the-box, ready-to-go conversion kit. This kit contains all the necessary components for easy installation and range enjoyment of the SPEAR LT.
Features:
- Adapts any M4/AR15 MIL spec lower assembly
- Dual rod recoil assembly eliminates buffer system
- M4 adapter and included telescoping coyote stock assembly
- ROMEO4XT-PRO red dot sight with mount and flip-back lens covers
- MLOK vertical grip.
- Adjustable gas system for suppressor optimization
- Quick change barrel design allows to easily and consistently swap calibers and barrel lengths
- Gas piston design reduces part exposure to carbon fouling
- Designed to go 20k rounds before any part replacements
- SLX/SLH Next Gen suppressor designed QD flash hider for clutch-lok adaptability
- Ambidextrous charging handle with gas deflector
- Replaceable parts (cam path follower, feed ramp, forward assist/deflector, charging handle locking pins) allow for longer receiver life over standard AR designs.
- Tapered bolt design functions more reliably and lasts longer than standard square lug m4 bolt designs.
- Nitride-coated cold hammer forged barrel for optimal accuracy and barrel life
ROMEO4XT-PRO Features:
- Illumination control moves to the top, providing easy access with either hand
- A dedicated night vision override switch makes short work of drastic changes in lighting conditions and by combining MOTAC with a common AAA battery
- Rated for 50,000 hours of runtime.
- IPX8-rated for waterproof and fogproof performance and is tested to MIL-STD-810 to ensure reliable service.
Included items:
Complete 16" 5.56 NATO upper assembly includes our ROMEO4XT-PRO, MLOK vertical grip, telescoping stock, and removable 3-prong flash-hider ready to accept our SLH & SLX suppressor systems.
Specifications
| SKU | UAMCX-556N-16B-LT-TT-R4XT |
|---|---|
| Model | SIG MCX-SPEAR LT |
| Barrel Extension | MCX |
| Barrel Length | 16 in [406.4 mm] |
| Barrel Rifling Type | Hammer Forged |
| Bolt Carrier Group Included | Yes |
| Caliber | 5.56 NATO |
| Charging Handle Included | Yes |
| Color | Black / Flat Dark Earth (FDE) |
| Forward Assist | Yes |
| Free Floated Handguard | Yes |
| Handguard Length (in.) | 13 |
| Handguard Material | Aluminum |
| Muzzle Device | Clutch-Lok Tapered QD Flash Hider |
| Muzzle Thread Pitch | 1/2-28 |
| Operating System | Short-Stroke-Piston |
| Receiver Finish | Anodized |
| Twist Rate | 1:7 |
