BCM MCMR-9 (M-LOK Compatible) Modular Rail | 9.4" Free Float Handguard
Not Yet Rated | Write the First Review SKU: 222-BRA-BCM-MCMR-9-556-BLK
UPC: 813000000000
MFG#: BCM-MCMR-9-556-BLK

BCM® MCMR-9 (M-LOK® Compatible) Modular Rail | 9.4" Free Float Handguard

Lightweight. Rigid. Mission-Ready.

The BCM® MCMR-9 Modular Rail delivers the perfect balance of strength, modularity, and lightweight control for modern AR-15 builds. Precision-machined from aerospace-grade 6061-T6 aluminum, this 9.4" free float rail features BCM’s industry-leading patented lock-up system and a fully M-LOK® compatible interface, allowing you to mount only what you need—where you need it.

With the same mechanical indexing and anti-rotation design found in BCM’s legendary KMR series, the MCMR-9 ensures rock-solid accessory mounting and superior heat resistance under sustained fire. Whether you’re building a CQB rifle, a mid-length patrol carbine, or a lightweight training setup, this rail is engineered to perform under pressure.

⚙️ Key Features:

• ✅ M-LOK® Modular Mounting System – Compatible with all M-LOK® accessories

• ✅ Free-Float Design – Reduces barrel stress, improves accuracy

• ✅ 9.4" Overall Length – Ideal for pistol, carbine, or mid-length gas systems

• ✅ 6061-T6 Aluminum Alloy – Aerospace-grade strength at just 5.9 oz (handguard only)

• ✅ Steel Barrel Nut Included – Shared with KMR, MCMR, and QRF series for consistency

• ✅ Heat-Indexed Mounting Hardware – Minimizes shift from barrel heat

• ✅ 1.3" Inside Diameter | 1.5" Outside Width – Slim profile for low-profile gas blocks

• ✅ Hard Coat Anodized – Mil-A-8625F, Type III, Class 2 – Durable and corrosion resistant

• ✅ FREE BCM M-LOK® Sling Mount Included (Limited Time)

🔫 Trusted by Professionals, Built for Serious Shooters

The BCM MCMR-9 M-LOK Rail offers the kind of performance that law enforcement, military units, and high-level civilian shooters rely on. Its slim profile, rigid barrel nut lockup, and lightweight footprint make it one of the most trusted AR handguards in the field.

If you demand precision, reliability, and flexibility in your rifle build, this is your next rail.