This is our standard TG36K pistol with IDZ-B arm brace. Comes with (3) German 30 round mags, extended paddle mag release, German 1.5 Carry Handle Optic, Pelican Case, SI Sling, Aluminum Data Plate and Patch, as well as 12.5" K length barrel and gas system with 1:7 twist, 15mm x 1 pitch.