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LMT AR-15 .223/5.56 Monolithic Rail Platform (MRP) - CQB - 14.5

LMT AR-15 .223/5.56 Monolithic Rail Platform (MRP) - CQB - 14.5
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Availability: Out of stock




Designed and manufactured by Lewis Machine & Tool Company, the patent-pending Monolithic Rail Platform, or MRP, is the most radical variation of an integrated rail system ever conceived. This one-piece receiver/free-floating handguard/rail system is precision machined from a solid aluminum forging for absolute strength and consistency. The MRP completely replaces the upper receiver and provides an unprecedented level of versatility to the operator.


  • Free-floating barrel
  • No loss of zero from rough handling
  • Reduced temperature to handguard & optics
  • Increased barrel life
  • Easy-to-access/clean design
  • Straight gas tube resists bending and retains better alignment with gas key
  • Reduced number of parts (13)
  • Quad Mil-Std 1913 rails
  • Top rail position matches M4 & E3-type weapons ensuring optics and sight compatibility
  • Accepts standard & enhanced M16-type (Stoner design) components


  • 10.5" Chrome Lined - CQB
  • 14.5" Chrome Lined - CQB
  • 16" Chrome Lined - CQB - Mid Gas System
  • Torque Wrench / 3 LMT Rail Panels

Bolt Carrier Assembly Must be Purchased Separately FREE Charging Handle - Included All NFA rules applies on 10.5" & 14.5" Uppers.

Additional Info

Additional Info

Manufacturer LMT
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No



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