The Gauntlet

Smith & Wesson Model 66

Clint Eastwood carried a Model 66 with 2.5" barrel that has a square butt profile, instead of the round butt, more common in the short-barreled version of this revolver.

Smith & Wesson Model 66 with 2.5" barrel - .357 Magnum

Ben Shockley (Clint Eastwood) with the Model 66

Sondra Locke with Shockley's Model 66

Browning Hi-Power

Cops can be seen shooting Browning Hi-Powers:

Browning Hi Power (Belgian Mfg) 1970s - 9x19mm

Cops carrying the Browning Hi-Power in "The Gauntlet"

Smith & Wesson Model 10

Several cops in the final shootout carry this revolver:

Smith & Wesson Model 10 Revolver - .38 Special

Cops carrying the Model 10 in "The Gauntlet"

Winchester Model 70

Detective Ben Shockley Clint Eastwood and prostitute Gus Mally Sondra Locke carry Winchester Model 70 Police Interceptor rifles.

Gus Mally Sondra Locke with Shockley's Winchester Model 70 Police Interceptor