Crown Ridge Chambered X-Caliber
CROXTON
Crucial Concealment
Crusader Defense
CruxOrd
Crye Precision
CRYSTALEYES
CSAT
Csspecs
CUBBY
CUDA
Cuddeback
Cudeman
CUGIR
CULPRIT
CUMINGS
CUSTOM
CUSTOM JIGS
CUSTOM LURES INC.
Cutter
Cutting Edge
CVA
CVLIFE
Cyclops
CYTAC
CZ
CZECH
Czech Small Arms
DAC
DAC TECHNOLOGIES
DAEWOO
DAIICHI
Daisy
DAIWA
DAKOTA TACTICAL
Damascus
Danco
DANGLER ENTERPRISES
Daniel Defense
DANIELSON
Danner
Dan Wesson
Dark Horse Firearms
Dark Horse Tactical
Dark Storm Industries
DAVID PEDERSOLI
Davidson Defense
Davidsons
Davis
Davis Industries
Davis Instruments
Dawson Precision
DDC
DDI
DDT
Ddupleks USA
Dead Air
Dead Air Armament
Dead Deer
Dead Down Wind
Deadeye Guns
Dead Foot Arms
Dead Ringer
Decal Grip
Decibullz
Deep Six Armory
Defender
Defiance
Delta
Del-Ton
Delton
Derringer
Derya Arms
Desantis
Desantis Leather Goods
Desert Eagle
Desert Tech
Destructive Devices Industries
Deutsche Werke