My Beltfed AR15 Project: The LIMA SIX

I posted some information about this project in the NFA subreddit, but I also wanted to cross post here and share the progress of my AR15 belt fed upper project.

Since April this year I've been designing and building a beltfed upper receiver for AR15's. The goal was to make something actually affordable to regular people, and also make something simpler and more reliable than other options on the market.

This receiver is completely different than any other AR15 receiver in that its stretched about 3/4" longer giving the bolt carrier more travel. It will use shortened AR10 buffers to allow more room in the buffer tube for the travel. This will not only make stripping rounds from links more reliable, but it will make the gun much more controllable. Its inspired by the Stoner 63 or Ultimax which have "constant recoil", meaning the shooter will only feel a constant push in full auto rather than each individual shot. The heavier carrier in my design combined with the 3/4" additional travel should make a constant recoil AR15 a reality.

The feed mechanism is heavily inspired by the M249 saw, and uses several components from the M249 to function. The rest of the design is based on a standard AR15, and shares many components including the barrel, handguard, gas blocks and tubes. It will work with all AR15 triggers including forced reset, binary, etc.

I do have a sign-up on my website where you can get on a list to buy one, but I will not post the link without permission (although the website URL is extremely easy to guess knowing the product name is LIMA SIX).

At this point I have the first prototype about 90% complete and will be test firing soon.

I'm looking forward to getting feedback from you guys on this project!