LMT MRP 12.5″ 5.56 Midlength ‘Specwar’ Barrel


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Frequently Bought Together

Price for both: $593.10

LMT MRP 12.5″ 5.56 Midlength Barrel

This LMT 12.5” 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.

This barrel was specifically designed to compliment the L7Z1A “Spec War” upper receiver. The short dwell time of the gas system creates an optimal recoil impulse and gas pressure for both suppressed and non-suppressed shooting while maintaining expected reliability.


  • 12.5” 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
  • Mid Length straight gas tube
  • A2 Birdcage Pre-Installed

This barrel is made for the LMT CQB/MRP Monolithic receiver. It will not fit MWS receivers.

3 reviews for LMT MRP 12.5″ 5.56 Midlength ‘Specwar’ Barrel

  1. Ceasar (verified owner)

    Quick shipping. Barrel attached to LMT upper to standard as required.

  2. Nick (verified owner)

    Barrel arrived in under 3 days and is great quality!

  3. avid collector (verified owner)

    G2G. Quick shipping from RD

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