LMT LM8 5.56 AR-15 Complete Piston Upper - 16"

Manufactured by Lewis Machine & Tool
1 Reviews



In Stock

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The Lewis Machine and Tool LM8 Complete Piston AR-15 Upper Receiver features a fully monolithic handguard and receiver design that free floats the barrel. The monolithic handguard also features locating lugs and screw holes for securely mounting accessory rails and a Torx screw design that holds the barrel in and allows for quick removal to change out the caliber. This model comes with a 16” barrel chambered in 5.56 with a 1:7 twist rate and a chrome lined bore for long term wear resistance. The carbine length piston gas system features a standard and suppressed setting. The piston rod and spring are coated and cryogenically treated for long term durability and corrosion resistance and can be removed for maintenance. This Lewis Machine & Tool AR-15 Complete Piston Upper Receiver comes with bolt carrier group and charging handle installed.

  • 16” chrome lined barrel
  • Chambered in 5.56 with 1:7 twist
  • Carbine length piston gas system
  • Standard and suppressed setting
  • Monolithic free float handguard
  • Quick change barrel system
  • Durable rail mounting system
  • QD sling attachment slots
  • Ambidextrous charging handle
  • Proprietary BCG and charging handle installed

Lewis Machine and Tool Company has been providing US Military, law enforcement, and government agencies with high-quality weapon systems since 1980. LMT is dedicated to providing that same level of precision engineering to civilians as well and is even expanding into foreign military services. All LMT Defense products are 100% made in America and they are a qualified 2005 GSA supplier. Lewis Machine & Tool has also won many awards for their quality engineering and excellence in business.


Barrel ContourMedium
Barrel Length16
BrandLewis Machine & Tool
Caliber Gauge5.56 NATO
Gas System LengthCarbine
Gas System TypeShort Stroke Gas Piston
Muzzle DeviceA2 Flash Hider
Twist Rate1:7

Ratings & Reviews

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Quality equipment

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Ordered over black Friday weekend got it super fast... Great quality upper so happy with purchase just wish it would have came with a lmt rail segment or 2.