This here is my BRN 180s. It's 10.5 inches and has a very low round count on it (sub 100). I have it on the BRN 180 lower with BCM internals. The brace is a Zhukov stock with the Farrow Tech brace adapter connected to the BRN lower using the Hera Arms adapter. I also put some magpul picatinny adapters on the mlok rail, but those can be easily taken off.