LMT MRP 10.5″ .300 Blackout Barrel


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(2 customer reviews)

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LMT MRP 10.5″ .300 Blackout Barrel

This LMT 10.5” 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.


  • 10.5” Chrome-lined 1:7” RH Barrel for MRP or MRP CQB Monolithic Upper Receivers
  • .300 Blackout Caliber
  • Cryogenically treated for maximum durability
  • Low profile gas block
  • Pistol 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.

2 reviews for LMT MRP 10.5″ .300 Blackout Barrel

  1. Joshua Heatwole (verified owner)

    Authentic LMT for a great price! Super sweatshop fast shipping. Loved the Ramen and constitution. Great company that I will be looking to purchase from in the future.

  2. Anthony (verified owner)

    Awesome service and super fast delivery. Item shipped the next day. Can’t believe this LMT 300 barrel was in stock. Kicking myself I didn’t order 2. Thanks Rooftop! I’ll be back.

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