The 20/20N Stabilizer Kit with Arm Brace is the first truly affordable stabilizer brace kit available on the market. This kit includes: Stabilizer Frame, Brace with Strap, UCH & GCH17 Charging Handles (low/high profile), Minimalist Sling, Picatinny Side Rails, G7 holster with pistol adapter. This model is compatible with compensators and Red Dot optics. It is also compatible with 9mm and 357 double Stack Gen 1-5 Glocks including Glock 26; and compatible with all double stack Gen 1-4 SW40 Glock including Glock 27.