[1] It is fed by a 10-round detachable box magazine situated behind the trigger in bullpup configuration.
Based on the design of the Barrett M82/M107, it is intended to be a lighter, more compact alternative.
Since the XM500 has a stationary barrel (instead of the recoiling-barrel design of the M82), it will likely have somewhat better accuracy.
[2] As with its predecessor, it comes with a removable, adjustable bipod mounted under the barrel, and a top-mounted Picatinny rail for attachment of a scope or other accessory.
This article relating to rifles is a stub.