This LMT 16" Chrome Lined 5.56x45 1:7" RH barrel is designed to match the LMT MRP or MRP CQB quick-change barrel systems.Features:16" Chrome-lined 1:7" RH Barrel for MRP or MRP CQB Monolithic Upper Receivers5.56x45 CaliberCryogenically treated for maximum durabilityLow profile gas blockMid Length straight gas tubeA2 Birdcage Pre-InstalledLMT's quality engineering is well respected in the industry, and their barrels are no exception. Chrome lined and cryogenically treated, this barrel has all the durability-enhancing features that one would expect from a high-grade carbine. Combine incredible durability with LMT's reputation for accuracy, and you have a versatile duty rifle that can keep up in any environment.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.Comes with an A2 birdcage flash hider pre-installed!This barrel is made for the LMT CQB/MRP Monolithic receiver. It will not fit MWS receivers.