LMT MRP Barrel Chrome Lined .300 Blk - 8.25"

The LMT .300 Blackout MRP Barrel is designed for use with LMT Monolithic Rail Platform (MRP) upper receivers, allowing compatibility with LMT’s quick-change barrel system. Available in 8.25-inch and 10.5-inch lengths, this barrel is chambered in .300 AAC Blackout and features a 1:7 right-hand twist rate suitable for a wide range of .300 BLK ammunition. The barrel is configured with a pistol-length direct impingement gas system and a low-profile gas block, making it compatible with compact rifle and pistol configurations built around the LMT MRP platform.

Constructed from chromoly steel with a chrome-lined bore, the barrel is designed for durability and long-term use. The barrel also undergoes cryogenic treatment as part of the manufacturing process. Each barrel includes a pistol-length straight gas tube and an A2-style flash hider, allowing installation on compatible LMT MRP upper receivers. The quick-change barrel interface allows the barrel to be installed or removed using the MRP’s locking bolt system.

Specifications

• Platform Compatibility: LMT Monolithic Rail Platform (MRP) Upper Receivers
• Caliber: .300 AAC Blackout
• Barrel Length Options:
  • 8.25"
  • 10.5"
• Twist Rate: 1:7" Right-Hand
• Operating System: Direct Impingement
• Gas System: Pistol-Length Gas System
• Barrel Material: Chromoly Steel (Chrome Lined)
• Treatment: Cryogenically treated
• Gas Block: Low-profile gas block
• Gas Tube: Pistol-length straight gas tube
• Muzzle Device: A2-style flash hider
• Weight: Approx. 1.644 lbs