Lima Six Belt Fed Upper Receiver

The Lima Six is a game-changing upper receiver that installs on any mil-spec AR15 or M16 lower receiver and provides belt fed capability. While a few parts must be swapped on the lower receiver, no permanent modifications or gunsmithing is required. Please read the entire product description for important technical information before ordering.

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$2,999.99

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The Lima Six is a game-changing upper receiver that installs on any mil-spec AR15 or M16 lower receiver and provides belt fed capability. While a few parts must be swapped on the lower receiver, no permanent modifications or gunsmithing is required. Please read the entire product description for important technical information before ordering.

The Lima Six WILL NOT FUNCTION with a standard AR15 buffer setup. For more information about buffers, click here: https://limasix.com/product/buffer-upgrade-kit-for-lima-six/

The Lima Six features a patent-pending stretched upper receiver, which provides an additional ~3/4″ of bolt carrier group travel compared to a standard AR15. This is a critical improvement for a belt fed firearm, as this additional travel assists in delinking rounds from the links. It also results in lower perceived recoil, and a more controllable rate of fire. No other belt fed AR15 on the market has this upgrade!

Additionally, the Lima Six features a top cover unlike any other belt fed top cover available, with a tensionable front pivot, two-point latch engagement, and an adjustable set-screw to take up any slack that may be present. These features result in an extremely reliable ability to hold zero even after repeated opening and closing. Initial testing shows that sub 2-MOA accuracy is achievable, which is unheard of for a belt fed firearm.

The Lima Six is compatible with standard AR15 barrels, although certain considerations need to be considered before swapping barrels. Please refer to the technical information section of our discussion forum for complete information regarding barrel swaps.

Includes:

  • Complete Receiver
  • Bolt Catch
  • Buffer Spacer
  • Recoil Spring

Requires:

Choose ONE of the following:

Additional information

Weight 9 lbs
Dimensions 32 × 4 × 4 in

Specifications

  • 5.56X45mm NATO
  • 7075-T6 Upper Receiver and Top Cover, Type III Hardcoat Anodized
  • 18” Chrome Lined Chrome Moly Vanadium Heavy Barrel
  • Midlength Gas System (Direct Impingment)
  • Midwest Industries 10” T-Series Combat Quad Rail
  • Billet Machined Hardened 17-4PH Feed Tray
  • K-Spec bolt with Dual Ejectors
  • 8620 Bolt Carrier, Full Auto Cut
  • Tool Steel Belt Feed Components
  • Billet Machined Aluminum Charging Handle
  • Threaded ½-28 with A2 Flash Hider

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