Thanks. It is a regular old plain Jane Socom 16. Delta P adaptor + Vg6 brake make it appear scout length. Sadlak spring guide is only other non factory part. Stock is a heavily reworked SAI Synthetic I have a thread on actually. Its become my passion project, I have a few lengthy threads full of nonsense I've tried and mostly failed at. Its gone full circle a few times through its progression but....I'm at a point where I can say I am very happy with it. Waiting to get over cvid-19 and ill have a range report here soon.Love that build! Do you mind explaining that build? What length barrel is that?