Rally Vincent carries an early model CZ 75 as her primary weapon of choice. She praises this weapon throughout the manga, considering it to be one of the best handguns ever made, due to the very high grade of steel used to make the first versions of the CZ 75.
Rally keeps a Colt 1908 as a backup weapon. The gun is attached to a special harness that allows the gun to be drawn by flicking her wrist, and has the triggerguard removed. This is an obvious shout-out to Taxi Driver (Kenichi Sonoda, the author of Gunsmith Cats, often cites American action films as a source of inspiration).
ATF agent Bill Collins uses a Walther PPK as his weapon. At one point, Rally makes a joke at Bill calling him "Agent Double Oh 7-11".
Rally uses this gun briefly in the first episode, when gun runners tell her to shoot Bill as a sign of trust. She instead shoots the ropes used to tie him up, hitting one of the gun runners in the leg in the process.
Near the begenning of the first episode, an off-duty cop brings his Beretta 92FS in to Rally's shop to get some custom work done. When checking the gun, Rally notices the weapon still has a round chambered and informs him to be more careful next time.
Another Beretta 92FS apears in the second Episode, when Russian assassin Natasha Radinov attacks an ATF safehouse. She either brought this weapon along or picked it up off a dead ATF agent.
A stainless Colt Python with a 8 inch barrel and a scope is shown briefly during the opening credits. The words "Python Hunter" are written on the side. One with a 4 inch barrel is used by Rally at a shooting range.
In the manga series, Roy Coleman mentions he carries a Colt Lawman with a 4-inch bull barrel.
Roy only draws this weapon once, during the third episode after Radinov attacks Rally and May.
In the third episode, Radinov uses a rare British bolt action Mark IIA Welrod pistol to kill ATF chief George Black. The weapon exhibits some rather bizarre changes between shots.
In the third episode, Radinov attacks Rally and May at Senator Haint's campaign rally with a Heckler & Koch VP70M. The VP70M has its stock attached, loaded with an extended magazine, and seems to be converted to full auto fire.
Near the end of the third episode, Senator Haints grabs what appears to be a SIG P226 to shoot Natasha Radinov. The weapon turns out to be empty and part of a set up by Becky and Cathy to get Senator Haints to admit his crimes.
When Radinov attacks the ATF safehouse in the second episode, she guns down an agent attempting to fire a Micro Uzi. She then picks up the gun and kills another ATF agent with it.
In the same episode, when Rally and May are investigating the shipping yard, some of the thugs that attack are carrying Micro-uzis.
In the opening of the OVA, Rally and May move in on a gun runner who jumped his bail. When he discovers the two bounty hunters are after him, he grabs a sawn off double barreled shotgun. However, May gets the drop on him and stuns him with a gas grenade.
One of the burglers in the first episode arms himself with a Mossberg 500 Bullpup. He never gets a chance to fire the weapon, as he and his pals are caught off guard by Rally and quickly subdued.
An Mossberg 500 Mariner, with what appears to be wood furniture, is used by one of the gun runners during the warehouse fire fight in the first episode.
Regular Mossberg 500s are seen in the second episode, in the hands of an ATF agent when Radinov attacks the safehouse and used by one of the thugs in the shipping yard fight.
During the warehouse fight the first episode, Rally grabs a Franchi PA8 with a folding stock and blindfires it, hitting two thugs in the legs. It's colored incorrectly, it should be all black, but the horizontal lines on the grip, and the vent holes in the stock give it away as a Franchi shotgun.
While going through the girls' stash, one of the burglars finds a box of M15 anti-tank mines. Interestingly, the mines are light blue like training munitions instead of OD green like a live mine.
These are references to the original Gunsmith Cats manga. A character named Bonnie had a prosthectic leg which housed a PM9, a French submachinegun which was notable for its ability to fold its magazine to lie along the barrel, making it very compact; her shoe also housed a bounding antipersonnel mine. Grey, another character, lost his hand thanks to Rally and replaced it with the blade weapon seen here, which is high-grade carbon steel and mounted on a launching mechanism powered by a car suspension spring.
