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Thomas Jane Custom 1911s
Castle's twin custom 1911A1s from
The Punisher (2004). Note the custom compensators on the barrels. The same gun case as the 1911s we also see a Colt 1851 Navy, a Colt Single Action Army, and a LeMat 1861 percussion cap revolver.photo from imfdb.org
Before the massacre, Frank's father shows him a pair of 1911A1s he says he finally finished customizing, which struck quite a cord with many a-1911 fan.
Glock 17
Castle fitting a shoulder stock on his two-toned Glock 17 which he then fits with a 33-round magazine. But he never actually uses it.photo from imfdb.org
During a preparation montage, we see Frank affix a stock to a 3rd Gen Glock 17 with a stainless slide. He then adds a 33-round magazine to the pistol, but unfortunately, he is never seen using it again.
Colt Officer's 1911
Castle uses a Colt Officer's 1911 when posing as a foreign arms dealer in the movie's prologue.photo from imfdb.org
Smith & Wesson Model 66
Frank looks at the smashed barrel of his hidden S&W Model 66.photo from imfdb.org
During the fight with The Russian, Castle retrieves a Smith & Wesson Model 66 from a custom secret drawer he installed in his apartment, only to have the barrel crushed by the bad guy's superhuman strength before he can get a shot off.
Savage/Stevens 311A
Frank and Frank Sr. fire Savage/Stevens 311A shotguns at the team of assassins.photo from imfdb.org
During the massacre at the Castle home, Frank and his father both arm themselves with Savage/Stevens 311A double-barrel break action shotguns and take down a number of bad guys before they're both shot, Castle Sr. fatally.