2 Pack Nerf Compatible Tactical Rail Connector Joiner, Connect Two Guns Together - Etsy
Amazon.com: Nerf Modulus Stealth Upgrade Kit : Toys & Games
Amazon.com: TASKQWIK Toy Gun Attachments for Nerf Guns, DIY Nerf Blaster Upgrade Accessories Compatible with Nerf Modify N-Strike Elite and Modulus Series Toy Gifts for Nerf Fans (AK Set) : Toys &