This 11.5" is set up as one of the smoothest shooting AR pistols on the market. The extra inch of barrel gives it 40% more dwell time over the shorter 10.5". Our 10.75" TYR Defense MLoK handguard comes to the end of the barrel making it perfect for running both unsuppressed or suppressed. Our forged receiver sets are hand matched for a tight fit and the SB Tactical SBA3 pistol brace gives you the adjustability needed while still classifying it as a pistol. We use all American made internals in our builds. It comes with a hard case, magazine, KNS antiwalk pins, and Magpul pistol grip.