Take your pick of Fight Club Custom's (also known as PTW Airsoft Works) multibarrel kit... "Newest version of FCC Multi Barrel Kit set (civilian) Black with hard anodize color which allow you to choice whatever length of outer barrel you looking for which 7.5in, 10.5in, 12.5in, 14.5in, 16in, 18in, 20in & 24in. Complete set come with 7.5in Base Outer Barrel, 7in extension, 5in extension, 3in extension and CCW thread inner barrel stablizer. Made by A6063-T6 which means super light weight & you won't feel any wobbling at all even multi length assemble together. Take this advance experience with your TW from CQB to Sniper."

FCC 300 Blackout Multi Barrel Kit G2 (black)

FCC 300 Blackout Multi Barrel Kit G2 (Silver)

FCC 300 Blackout Multi Barrel Kit G2 (Stainless Limited)