This is an orange Muzzle Brake for the Caliburn, Talon Claw, and their varieties.
This is a design by CaptainSlug on thingiverse and is open source here: https://www.thingiverse.com/thing:2376150
To purchase a completely built Talon Claw Style blaster...there are options at the following links:
https://www.etsy.com/listing/717525967/talon-claw-homemade-blaster
https://www.etsy.com/listing/716643952/nerf-talon-claw
https://nextlevelnerf.com/collections/frontpage/products/custom-arcane-talonclaw-sbr