During the final assault, Frank (Ray Stevenson) takes a custom 10.5 inch barrel M4A1 Carbine with a C-More red dot optic, a sound suppressor, and a short version of the AG36 grenade launcher. The suppressor is an M4-2000 by Advanced Armament Corp.
H&K AG36 Grenade Launcher
Frank appaently shortens an Heckler & Koch AG36 Grenade Launcher to make it more light weight. Prop wise, this is an airsoft product called the AGX made by Madbull. They have been making reference to its use in the film for some time now.
M203 Grenade Launcher
Frank is seen using this, but it was a stand alone, and apparently the effects guys made it looked like he fired a missile out of it. It was used once before Frank switched to the SL8.
Smith & Wesson 500 Magnum Revolver
Frank Castle keeps a performance center version of the Smith & Wesson Model 500 as one of his sidearms. He has this stainless version with extended ejector shroud and also one with a supressed black barrel and a Knight's Armament RIS setup, flashlight, and laser. A bunch of one of the gangs were given to them, some standard and some with scopes.
Beretta 92FS INOXs converted to fully automatic
Frank Castle uses twin stainless Berettas with extended mags and converted to full-auto in the movie.
Beretta M92SB
In the hands of Jigsaw's thug Pittsy and taken by Agent Budianski (Colin Salmon).
Fitted with what appear to be pearl grips.
H&K MP5K
Used in the first gunfight scene. They are seen with satin nickel receivers and they have their fore grips removed,making them "machine pistols".
H&K MP5A2
H&K MP5A3
H&K MP5SD
Heckler & Koch USP Compact Tactical
Frank's backup weapon for the first part of the film. Has a Spurred hammer.
Heckler & Koch SL8
Frank Castle uses the SL8 to snipe one of the members of the urban freeflow gang, then shoots the leader once in each thigh.
When the camera shows Frank looking down the scope when he fires, there is no recoil...
When Jigsaw goes to terrorize the fallen officer's family, Ink carries a Franchi PA3 shotgun. Castle kills Ink and takes the shotgun. He later uses it to shoot Pittsy in the head.
1911A1 GI
Seen in the beginning disassembled and cleaned by Frank, but never used. Obvious reference to Franks' preference for them in in the comics.
After doing the above mentioned maintenance, He chooses to load-out with Beretta's, MP5k's, and a H&K USP .45 CT. If he was never going to use this phenomenal weapon, why did the film not show him cleaning a Beretta?