BATTLEARMS® WORKHORSE® AR15/M4 15″ Rail System Upgrade Kit
Not Yet Rated | Write the First Review SKU: 222-BAT-WH-UR-UPG
UPC: 810033785795
MFG#: WH-UR-UPG

BATTLEARMS® WORKHORSE® AR15/M4 15″ Rail System Upgrade Kit

Precision Meets Performance — Complete Your Build with Tactical Confidence

Take your rifle to the next level with the BATTLEARMS® WORKHORSE® 15” Rail System Upgrade Kit, engineered for uncompromising shooters who demand lightweight control, modularity, and superior quality. This complete upgrade kit includes the WORKHORSE® 15" free-float M-LOK handguard and a .750 low-profile gas block, making it the perfect all-in-one solution for modern AR15 and M4 platforms.

Crafted from aircraft-grade 6061-T6 aluminum and finished with durable black hardcoat anodizing, this rail system offers maximum strength-to-weight performance while maintaining a slim, ergonomic profile. The full-length 1913 Picatinny top rail pairs seamlessly with your upper receiver and provides a rock-solid foundation for optics, BUIS, and accessories.

Whether you're upgrading your duty rifle, building a custom AR15, or outfitting a patrol carbine, the WORKHORSE® rail system delivers elite-level performance that’s combat-proven and range-ready.

🔧 Kit Includes:

• 15” WORKHORSE® Free-Float M-LOK Handguard

• .750 Low Profile Gas Block (perfect fit for standard AR barrels)

• Steel Barrel Nut and Mounting Hardware

⚙️ Key Features:

• Free-Float Design:
  Increases accuracy by eliminating pressure on the barrel from sling tension or hand placement.

• Full Picatinny Top Rail:
  Ensures uninterrupted mounting space for optics and accessories.

• M-LOK® Mounting System:
  Allows for direct attachment of lights, grips, and mission-specific gear along the 3, 6, and 9 o’clock positions.

• Slim, Ergonomic Profile:
  Enhances control and handling without added bulk.

• Durable Anodized Finish:
  Black MIL-A-8625 Type III Hardcoat resists corrosion, wear, and abuse.

• Lightweight Yet Rugged:
  Built from 6061-T6 aluminum for strength without compromise.

📏 Specifications:

🔥 Why Upgrade to the WORKHORSE® Kit?

Whether you're building a high-performance rifle or replacing a factory rail, the WORKHORSE® Upgrade Kit gives you both premium functionality and peace of mind. From suppressed precision shooting to fast-paced tactical drills, it’s built to perform when it matters most.