Katz
KCI
KCI USA
KE Arms
Kel-Tec
Keng's
Kent Cartridge
Kershaw
KeyBar
KeySmart
Keystone Sporting Arms
Khar
Kimber
Kinetic Development Group
Kinetic Development Group, LLC
Kingston Armory
Kizlyar
Klecker
Kleen-Bore
Knight & Hale
Knights Armament Company
Knives of Alaska
KNS Precision
KoamTac
Kodiak
Konus
Kriss USA
Kwikee Kwiver
Kwik-Site
Lady Conceal
L.A.G. Tactical, Inc.
Lake City
Lancer
Lansky
Lantac
Laser Genetics
LaserLyte
LaserMax
LBE Unlimited
LC Smith
LDB Supply
Leapers
LED Lenser
Lee
Legacy Sports International
Les Baer
LET
Leupold
Lewis Machine & Tool Company
Liberal Tears
Liberty Ammunition
Liberty Safe
Lightfield
Light My Fire
Limbsaver
Linder
Ljutic
LKCI
Llama
Lockdown
Lone Wolf Distributors
Lucas Oil
Lucid Optics
Lumenok
Luminox
Luth-AR
LWRC International
Lyman
MAC
Mace
Mace Personal Defense
Mace Security International
Magellan
Maglite
Maglula
Magnum Research
Magnus Broadheads
MagPod
Magpul
MagPump