This is a custom built ATI PDW. 7.5” Tybee barrel chambered in 556. ATI upper and lower. SB brace. A kit from Optics Planet was used for the trigger group and buffer spring/tube. Comes with all attachments seen which are iron sights, red dot, laser/flash light, a 20rd Magpul magazine, and QD mounts. If I can find the 3 point sling I’ll throw it in as well (will update the listing if it’s found).