The following firearms were used in the film My Lucky Stars:
In many scenes a group of Hong Kong police officers emerge from nowhere to surround Skinny (Sammo Hung) and his friends and hold them at gunpoint. In each scene the majority of the officers carry some M-16 variant.
Soldiers outside the prison armed with M16 Rifles
Police raiding the safehouse armed with M16s
Soldiers also have FN L1A1 rifles.
British Inch Pattern L1A1 SLR (Self Loading Rifle) chambered in 7.62x51mm NATO - Variation of the FN FAL rifle. British & New Zealand SLRs were later fitted with black fibreglass furniture as seen here. Since the movie was made while Hong Kong was still under British control, this is the likely model.
The soldiers on the left have L1A1 rifles.
Smith & Wesson Model 10 Snubnose
Muscles (Jackie Chan) carries a Model 10 Snubnose as his main weapon as do most of the Hong Kong Police Force.
Smith & Wesson Model 10 snub nose revolver - .38 Special. Early Model
Muscles' Model 10 in his holster
Muscles draws his Model 10 before entering the criminals' hideout
Muscles cocks the hammer of his revolver. Most of the shots he fires are in single action.
A criminal grabs at Muscles' gun through a wall.
Muscles tilts his gun sideways to try to shoot a henchmen he is pinned underneath only to find his revolver is empty. In this shot it is seen that Muscles Revolver has a pachmayr grip adapter.
A group of Hong Kong Police hold their revolvers on Skinny outside a prison.
Sterling Submachine gun
Several law enforcement officers who ambush Skinny (Sammo Hung) outside prison are armed with Sterling Submachine guns.
Sterling Mk. IV Submachine Gun - 9mm
Soldiers outside the prison armed with Sterling Submachine guns
A pair of mall security guards who chase after Turbo after he robs a jewelry display case are armed with Remington 870 shotguns.
Remington 870 Police Magnum Riot Shotgun - 12 gauge
A guard emerges from a back room with a Remington 870 in hand
Ricky Fung (Biao Yuen) draws a Browning Hi-Power in the opening fight scene, though it is knocked from his hand before he can fire a shot.
Browning Hi-Power "Type 73" - 9x19mm.
The grip of Ricky's gun as he prepares to draw it
Ricky holds his pistol after being knocked over (bottom left)