LMT MRP 20″ 5.56 Rifle Barrel


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For use with the Rifle-Length MRP upper. Installation on the CQB-Length MRP upper will result in exposed gas tube.

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LMT MRP 20″ 5.56 Rifle Barrel

This LMT 20” Chrome Lined 5.56×45 1:7” RH barrel is designed to match the LMT MRP or MRP CQB quick-change barrel systems.

The gas system has already been installed to match your MRP upper receiver. To install this barrel, use the factory torque wrench to release the retaining bolts at the base of your handguard, swap this barrel in, and tighten the bolts down to LMT’s spec. If you want to change calibers or barrel lengths, we offer several other MRP barrels to match your needs.


  • 20” Chrome-lined 1:7” RH Barrel for MRP or MRP CQB Monolithic Upper Receivers
  • 5.56×45 Caliber
  • Cryogenically treated for maximum durability
  • Low profile gas block
  • Rifle Length straight gas tube
  • A2 Birdcage Pre-Installed

This barrel is made for the LMT MRP Monolithic receiver. Installing it with the CQB upper will result in exposed gas tube. It will not fit MWS receivers.


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