LMT Defense 5.56 F-A Bolt Carrier Group - R-L7D3
Duty-grade LMT reliability for suppressed or unsuppressed AR platforms.
Only 3 left in stock
LMT Defense 5.56 F-A Bolt Carrier Group
The LMT Defense 5.56 Full-Auto Bolt Carrier Group is a duty-grade M16-pattern BCG built for dependable operation in compatible direct-impingement AR platforms. LMT has produced full-auto M16/M4 bolt carrier groups and related components for U.S. Department of Defense applications for decades, making the L7D3 a proven option for new builds or replacing lower-quality components.
The L7D3 uses a manganese phosphate finish with an 8620 carrier and Carpenter 158 steel bolt. The bolt is high-pressure tested and magnetic particle inspected, while the gas key is secured with hardened fasteners and properly staked for reliable gas-system operation.
LMT specifically states that the L7D3 works well in both suppressed and unsuppressed weapon systems, making it a versatile choice for a wide range of compatible rifle configurations.
Features
- Full-auto M16-profile bolt carrier group
- Built for duty-grade reliability
- Compatible with suppressed and unsuppressed systems
- High-pressure tested and magnetic particle inspected bolt
- Properly staked gas key
- Made in the USA
Specifications
- Platform: AR / LMT MRP-L / SPM
- Operating Method: Direct Impingement
- Caliber Compatibility: 5.56×45 / .223 Remington / .300 BLK / .350 Legend
- Carrier Profile: M16 / Full-Auto
- Carrier Material: 8620 Steel
- Carrier Finish: Manganese Phosphate
- Bolt Material: Carpenter 158 Steel
- Bolt Finish: Manganese Phosphate
- Bolt Testing: HPT / MPI
- Gas Key: Properly Staked
- Gas Key Fasteners: Hardened
- Weight: 0.716 lbs / 11.456 oz
- Manufacturer Part Number: R-L7D3
| Weight | 12 oz |
|---|---|
| Dimensions | 8.5 × 2.5 × 2.5 in |
| Bolt Material | 8620 Steel |
| Finish | Mag Phosphate |
| Cartridge Compatibility | .223/5.56 NATO/.300 BLK |
| Carrier Profile | M16 |
| High Pressure Tested | HP Tested |
| Magnetic Particle Inspected | Magnetic Partical Inspected |
| Platform | AR-15 |
| Bolt Finish | Mag Phosphate |
| MPN | R-L7D3 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.