FAMAE SAF - Design

Design

The SAF is a blowback-operated select-fire gun, firing from a closed bolt. It is based on the Swiss SIG SG 540 assault rifle which was produced under license in Chile in the 1980s. In general the design is a shortened version of the SIG 540 rifle, but the rifle's rotating bolt has been replaced with a simple blowback bolt. The SAF also has a bolt hold-open catch that engages after the final shot. Otherwise, the receiver, stock, fore-end, trigger/hammer assembly and floating firing pin design are from the SIG 540. The upper and lower receiver, as well as the trigger guard are steel, pistol grip and Handguards are all made from polymer. The ambidextrous safety/fire selector switch, as well as the interchangeability with SIG 552/553 handguards, is a feature found on the latest versions. Older versions used own handguards.

The 9mm magazines are transparent plastic, allowing the number of available rounds to be determined visually. The magazine is fitted with protruding lugs on one side and corresponding slots on the other, allowing two or three magazines to be clipped together for faster magazine changes. The .40S&W magazines are steel and hold 30 rounds. The selector has four settings: safe, single shot, 3-round burst and fully automatic. Some models were made in a semi-auto only configuration.