Lima Six 5.56 NATO Belt Fed Upper Receiver
$2,999.99 – $3,099.98Price range: $2,999.99 through $3,099.98
Batch 2 is shipping now. We’re now taking orders for batch 3. We have 35 allocated in BATCH 3 that will begin shipping in 4-6 weeks. After those sellout, lead times will increase.
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.
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.
The Lima Six belt fed upper receiver WILL NOT FUNCTION with a standard AR15 buffer setup. This is because the Lima Six has a stretched upper receiver, which requires more room in the buffer tube to cycle. There are two options for buffer configurations that work:
- A shorter buffer (AR10 length, 2.5″ long) in a standard 7″ carbine length tube (SEMI AUTO ONLY)
- A standard buffer (AR15 length, 3.125″ long) in a longer A5 7.75″ length tube (required for full auto)
This upgrade kit contains what you need for OPTION 2. It includes an A5 buffer tube, H3 buffer, and Sprinco Orange spring.
Will start shipping MID FEBRUARY.
