The T22 Sport Chassis is compatible with all standard, bull, and suppressed barrels, features a lightweight modular design, a continuous picatinny rail. $200.00 Includes built-in spring loaded Troy BattleSights™. Machined from hardened aircraft aluminum with stainless steel components. Finished in MIL-SPEC hardcoat anodizing. Upgrades include Troy BattleAxe CQB pistol grip. Upgrades includes ambidextrous rifle sling adapter. Optional: cantilever scope mount (30mm - 1 inch DIA).