Yes a lot. This is the Spear right? I recently watched a lot of stuff about it. It’s very cool. Besides the bolt spring the rest is AR platform. Same buttons same everything. Even they added an AR charging handle because the testing soldiers asked for it.

The interiors are full AR like. Same bolt with same locking mechanism. Standardized mags, same kind of disassembly.

They basically just changes the bolt spring location, from the stock to the too of the bolt (similar to an AK).