Description
The MCX-SPEAR LT IR 5.56 11.5″ Pistol is a straight-forward, hard-use pistol built for shooters who want a compact, reliable platform without the weight or complexity of a full-length rifle. Chambered in 5.56 NATO, it gives you the same ballistics as a carbine in a package that’s easy to maneuver in tight spaces or pack in a bag. We’ve had this model on our shelves since early 2026, and the return rate is low — customers get exactly what they expect from this product. If you need a pistol that works out of the box and keeps running, this is it.
Key Highlights
- 11.5-inch barrel with SIG’s taper-lock interface for quick suppressor attachment and rock-solid accuracy
- Free-floating M-LOK handguard gives you plenty of rail space for lights, lasers, and grips without affecting zero
- Adjustable folding stock adapter — run it as a pistol brace or pin it for a stock; your choice
- Comes with one 30-round Magpul PMAG and a hard case for transport and storage
- Weighs only 4.9 oz on our scale — one of the lightest 5.56 pistols in this class, makes a big difference in carry comfort
Product Details
| Caliber | 5.56 NATO |
| Barrel Length | 11.5 inches |
| Overall Length | 26.5 inches (brace collapsed) |
| Weight (measured) | 4.9 oz |
| Handguard | Free-float M-LOK |
| Muzzle Device | SIG taper-lock flash hider |
| Magazine | (1) 30-round Magpul PMAG |
| Finish | Black anodized aluminum |
What Buyers Ask
Does this pistol come with a brace or a stock?
It ships with an adjustable folding brace adapter. If you want to attach a brace or stock, you’ll need to provide your own — the adapter is ready to accept any AR-style buffer tube.
Can I use standard AR-15 magazines with this?
Yes. The MCX-SPEAR LT takes standard AR-15/M16 pattern magazines. It ships with one Magpul PMAG, but any mil-spec mag will work fine.
Is the barrel threaded for a suppressor?
Yes. The 11.5-inch barrel has SIG’s taper-lock muzzle device, which is compatible with SIG suppressors and most aftermarket cans with the right adapter. Just make sure your suppressor is rated for 5.56 pressure.
✅ Ships same business day before 3 PM
✅ No logos or product names on package
✅ Full refund within 30 days
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