
Availability: In Stock
Current Stock: Out of stock
The LMT Monolithic 5.56×45 NATO 11.5" carbine-length barrel is purpose-built for shooters running LMT's monolithic upper receiver platform. At 11.5 inches, this barrel strikes a practical balance between velocity and maneuverability, making it a solid choice for tactical carbines, short-range hunting rigs, or home-defense builds where a compact profile matters. The chrome-lined bore and chromoly construction deliver durability that outlasts typical barrels, and LMT's cryogenic treatment helps ensure consistent performance and longevity under sustained fire.
This barrel is engineered specifically for the LMT monolithic system, which means it integrates directly with LMT receivers and maintains the straight gas tube and low-profile gas block design that platform is known for. The 1:7" right-hand twist is a proven twist rate for 5.56 that handles the full range of 55-grain to heavier match rounds without issue. The included A2 birdcage flash hider helps reduce muzzle signature—a practical feature if you're running an indoor range or don't want excessive flash in low-light scenarios.
If you're building or upgrading an LMT monolithic upper, this 11.5" barrel gives you the compact handling of a pistol-length platform without sacrificing the gas port pressure curve of a carbine. Chrome lining is a real asset for shooters who don't have the luxury of frequent cleaning or run suppressed (where added heat and fouling accelerate wear).
| Caliber | 5.56×45 NATO |
| Barrel Length | 11.5 inches |
| Barrel Profile | Carbine Length |
| Material | Chromoly, chrome-lined |
| Rifling Twist | 1:7" right-hand |
| Operating System | Direct Impingement |
| Gas Configuration | Straight gas tube, low-profile gas block |
| Muzzle Device | A2 Birdcage Flash Hider |
| Treatment | Cryogenically treated |
| Finish | Black |
This barrel is designed for LMT monolithic receiver platforms specifically. If you have a standard LMT upper or are building with a different receiver, confirm compatibility with the manufacturer before purchase.
The 1:7" right-hand twist handles the full range of standard 5.56×45 ammunition, including lighter 55-grain rounds and heavier match-grade projectiles. This twist rate is a proven, versatile standard for 5.56 carbines.
Yes, the A2 birdcage flash hider is included.
Chrome lining increases bore durability, resists corrosion, and makes cleaning easier—especially valuable if you shoot frequently, run suppressors, or don't have time for meticulous maintenance between sessions.

SKU: 167527910 • Weight: 1oz





Availability: In Stock
Current Stock: Out of stock
The LMT Monolithic 5.56×45 NATO 11.5" carbine-length barrel is purpose-built for shooters running LMT's monolithic upper receiver platform. At 11.5 inches, this barrel strikes a practical balance between velocity and maneuverability, making it a solid choice for tactical carbines, short-range hunting rigs, or home-defense builds where a compact profile matters. The chrome-lined bore and chromoly construction deliver durability that outlasts typical barrels, and LMT's cryogenic treatment helps ensure consistent performance and longevity under sustained fire.
This barrel is engineered specifically for the LMT monolithic system, which means it integrates directly with LMT receivers and maintains the straight gas tube and low-profile gas block design that platform is known for. The 1:7" right-hand twist is a proven twist rate for 5.56 that handles the full range of 55-grain to heavier match rounds without issue. The included A2 birdcage flash hider helps reduce muzzle signature—a practical feature if you're running an indoor range or don't want excessive flash in low-light scenarios.
If you're building or upgrading an LMT monolithic upper, this 11.5" barrel gives you the compact handling of a pistol-length platform without sacrificing the gas port pressure curve of a carbine. Chrome lining is a real asset for shooters who don't have the luxury of frequent cleaning or run suppressed (where added heat and fouling accelerate wear).
| Caliber | 5.56×45 NATO |
| Barrel Length | 11.5 inches |
| Barrel Profile | Carbine Length |
| Material | Chromoly, chrome-lined |
| Rifling Twist | 1:7" right-hand |
| Operating System | Direct Impingement |
| Gas Configuration | Straight gas tube, low-profile gas block |
| Muzzle Device | A2 Birdcage Flash Hider |
| Treatment | Cryogenically treated |
| Finish | Black |
This barrel is designed for LMT monolithic receiver platforms specifically. If you have a standard LMT upper or are building with a different receiver, confirm compatibility with the manufacturer before purchase.
The 1:7" right-hand twist handles the full range of standard 5.56×45 ammunition, including lighter 55-grain rounds and heavier match-grade projectiles. This twist rate is a proven, versatile standard for 5.56 carbines.
Yes, the A2 birdcage flash hider is included.
Chrome lining increases bore durability, resists corrosion, and makes cleaning easier—especially valuable if you shoot frequently, run suppressors, or don't have time for meticulous maintenance between sessions.
SKU: 167527910 • Weight: 1oz
