Civilian Version S1 Pistol
Uses AR-15 STANAG Magazine
Monolithic Picatinny Rail
Multipurpose Mounting Point on Rear
10-Round .223 Rem./5.56mm NATO Magazine
The first civilian-legal form of CZ-USA's 805 Bren is the S1 Pistol, equipped with an 11" barrel in .223/5.56. Utilizing the ubiquitous STANAG magazine from the AR-15/M16, the 805's action is housed in a one-piece aluminum upper receiver with a monolithic Picatinny rail for attaching additional equipment. At the rear of the action is a multipurpose mounting point, fit from the factory with a single-point sling attachment. The addition of an accessory arm brace adapter (sold separately) coupled with the effective factory-equipped two-port brake makes the Bren impressively stable to shoot in pistol form.