Sig Sauer MCX-Spear LT Features
The MCX-Spear LT Upper/Conversion Kit sets itself apart with a dual rod recoil assembly that eliminates the need for a traditional buffer system, enabling a more compact and efficient design. The M4 adapter expands configuration options, allowing for Pic rail folding stock capabilities, enhancing the platform’s versatility. An adjustable gas system permits fine-tuning for suppressor use, ensuring reliable performance under different operating conditions.
Further innovation is seen in the quick-change barrel design, facilitating easy caliber and barrel length swaps, and a gas piston design that significantly reduces carbon fouling on critical parts, extending the operational life of the system. Designed with durability in mind, this kit is intended to go 20k rounds before necessitating part replacements. The inclusion of an SLX/SLH Next Gen Suppressor Designed QD Flash Hider offers quick-detach adaptability, while the ambidextrous charging handle with a gas deflector adds to the user-friendly nature of the system.
Sig Sauer MCX-Spear LT Specifications
- Model: SIG MCX-SPEAR LT
- Caliber: 300 BLK
- Barrel Length: 9″
- Overall Length: 17.5″
- Weight: 3lb, 14.7oz
- Barrel Material: Nitride Coated Cold Hammer Forged
- Barrel Rifling Type: Hammer Forged
- Twist Rate: 1:5
- Operating System: Gas Piston
- Muzzle Device: 3-Prong/SIG Suppressor QD
- Muzzle Thread Pitch: 5/8-24
- Handguard Length: 7.94″
- Handguard Inside Diameter: 1.48″
- Handguard Material: Aluminum
- Receiver Finish: Black Anodized
- Bolt Carrier Group Included: Yes
- Bolt Carrier Finish: DLC
- Charging Handle Included: Yes
- Forward Assist: Yes
- Free Floated Handguard: Yes
| Barrel Length | 9 |
|---|---|
| Caliber | .300 AAC Blackout |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Sig Sauer |
| Manufacturer Part Number | UAMCX-300B-9B-LT-BLK |
| Model | MCX-Spear LT Upper/Conv. Kit |
| Type | Uppers |
| UPC | 798681682522 |
Frequently Asked Questions About This Product
Why buy Sig Sauer MCX-Spear LT Upper/Conv. Kit Black .300 AAC Blackout 9" Barrel from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Sig Sauer MCX-Spear LT Upper/Conv. Kit Black .300 AAC Blackout 9" Barrel?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Sig Sauer MCX-Spear LT Upper/Conv. Kit Black .300 AAC Blackout 9" Barrel available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: RIFLES, Uppers.
What tags or features does this product have?
Key features and tags for this product include: RIFLES, Uppers.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Sig Sauer MCX-Spear LT Upper/Conv. Kit Black .300 AAC Blackout 9" Barrel
All firearms, including the Sig Sauer MCX-Spear LT Upper/Conv. Kit Black .300 AAC Blackout 9" Barrel, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Sig Sauer MCX-Spear LT Upper/Conv. Kit Black .300 AAC Blackout 9" Barrel is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
