A list of firearms related acronyms. 
http://www.saami.org

These are some of the most commonly seen Abbreviations seen in online forums or product descriptions.  If you would like to add a few or make a correction, click here - feedback form.
* Some of the most common "internet talk" has been ignored - (example = j/k)
** The sometimes confused 'internet talk' is in light grey text.


ACC = Remington ACCelerator
ACP = Automatic Colt Pistol (.45 ACP, .32 ACP)
AD = Accidental Discharge
AE = Action Express (.41 AE, .50 AE)
AFAIK = As far as I know
AFK = Away From Key Board
AWB = Assault Weapons Ban
B&D = Bain and Davis (.357/44 B&D)
BBL = Breech Loading Barrel
                  (Receiving the charge at the breech instead of at the muzzle.)
BBWC = Bevel-Base WadCutter
BG = Bad Guy
BR = Bench Rest Remington (6mm BR, 7mm BR)
BRB = Be Right Back
BT = Boat-Tailed
BTDT = Been There Done That
BTW = By The Way
BUG = Back up gun
CB = Cast Bullet
CCW = Concealed Carry Weapon or Carry Concealed Weapon
CFP = Concealed Firearms Permit-Utah
CHL = Concealed Handgun License
CL = Remington Core-Lokt
COM = Center of Mass
CPL = Concealed Pistol License
CQB = Close Quarters Battle
CQC = Close Quarters Combat
CYA = Cover Your ***
DA = Double Action
DAO = Double Action Only
DEWC = Double Ended WadCutter
DF = Drop Free (magazine) (see FML - Full Metal Lined)
DOA = Dead on Arrival
Double-Tap = Two shots fired quickly at the same spot on a target
DPS = Deparment of Public Safety
EFMJ = Expanding Full Metal Jacket
EMT = Emergency Medical Technician
ETA = Estimated time of Arival
FA = Full Auto
FFL = Federal Firearms License
FMJ = Full Metal Jacket
FML = Full Metal Lined (magazine)  (see DF - Drop Free)

In current magazines the metal lining extends the whole way down the magazine tube. These will drop out of the gun even when full of bullets. They are called Fully Metal Lined (FML) or Drop Free (DF) magazines.

Followers =  The piece of plastic that rests on top the magazine spring. When the magazine is empty its what pushes up the slide stop.
FP = Flat Point
FS = Fixed/Factory Sights
FST = Winchester Fail Safe Talon (Black Talon)
FTE = Failure to Eject
FTF- Failure to Feed
FTI = Failure to Ignite (Fail to Fire)
FTS = Failure to stop
FWIW = For whats it worth
G&A = Guns & Ammo Magazine (.40 G&A, .460 G&A)
GDHP = Speer Gold Dot Hollow Point
GT = Glock Talk
GTer = A member of Glock Talk
H&H = Holland & Holland (.375 H&H)
H&R = Harrington & Richardson (.32 H&R Mag.)
HBWC = Hollow-Base WadCutter
HP = Hollow Point
HPJ = Remington High Performance Jacketed (Golden Sabre)
HTGR = Hit The Ground Running.
IHMSA = International Handgun Metallic Silhouette Assoc.(7mm IHMSA)
IIRC = If I recall correctly
IWB = Inside waistband
JDJ = J. D. Jones (.375 JDJ)
JHP = Jacketed Hollow Point
JRS = John R. Sundra (7mm JRS)
JSP = Jacketed Soft Point
KB = KaBoom (explosive case failure)
LC = Long Colt (.38 LC)
L-C/T = Hornady Lead Combat/Target
LEO = Law Enforcement Officer
LHP = Lead Hollow Point
LR = Long Rifle (.22 LR)
LRN = Lead, Round Nose
LRND = Last Round Nose Dive (magazine problem)
LSWC = Lead Semi-WadCutter
LTC = License to Carry (Massachusetts)
Mag = Magnum (.357 Mag, .44 Mag)
MC = Metal Cased
Mexican carry = (IWB) without holster
mm = millimeter (10mm, 7mm Mag)
MRWC = Mid-Range WadCutter
NATO = North Atlantic Treaty Organization (7.62 NATO, 5.56 NATO)
NDF = Non-Drop Free (magazine)  (see NFML)
NFML = Non-Full Metal Lined (magazine) (see NDF - Non-Drop Free)

The original Glock magazines were designed to stay in the gun if the magazine release was pressed and there were bullets still in the magazine. They did this by making the magazines without the metal lining running all the way to the base of the magazine. These are Non-Fully Metal Lined (NFML) magazines also known as Non-Drop Free (NDF) magazines.

NG = Negligent Discharge
NIB = New In Box. Meaning a gun is new.
NS = Night Sights
OC or OC Spray = Pepper Spray
OD = Olive Drab
Open Carry = Carry of a firearm where the gun and holster are clearly visible
OWB = Outside waistband
Para. (sometimes Pb) = Parabellum[3] (9mm Para.)
PB* = Lead Bullet
PC = Politically Correct
POS = Piece of ****
PL = Remington Power-Lokt
PPC = Pindell-Palmisano Cartridge (.22 PPC, 6mm PPC)
PSP = Pointed Soft Point or Plated Soft Point
Rem = Remington (.223 Rem, .35 Rem)
Ren = Charles Rensing & Jim Rock (.270 Ren)
RF = RimFire (.22 RF)
RNL = Round Nosed Lead
ROTF = Rolling On The Floor
RTFM = Read The %^#!ing Manual
S&H = Shipping and Handling
S&H = Sharpe & Hart (7x61 S&H)
S&W = Smith & Wesson (.40 S&W, .32 S&W)
SA = Semi Auto or Springfield Armory
SA = Single Action
SD = Self Defense
SHTF = When the "stuff" hits the fan.
SJHP = Semi-Jacketed Hollow Point
SJSP = Semi-Jacketed Soft Point
SOB = "Small Of Back" carrying at 6:00 o'clock, right along the spine
SOD = Special Operations Division
SOT = Special Operations Team
SP = Soft Point or Spire Point
Spl. = Special (.38 Spl. .32 Win Spl.)
Sprg. = Springfield Armory (.30-06 Sprg.)
SPTZ = Spitzer
SS = Strongside: carrying the sidearm on the side you are 'handed'.
STHP = Winchester Silver Tip Hollow Point
Stunad = Italian pidgeon English term meaning jackass or moron....
SWAT = Special Weapons and Tactics (Team)
SWC = Semi Wad Cutter
SX = Hornady Super eXplosive
SXT = Winchester Supreme eXpansion Talon (Black Talon)
TC = Truncated Cone
T/C = Thompson/Center
TCU = Thompson/Center and (Wes) Ugalde (7mm TCU, 6mm TCU)
TMJ = Total Metal Jacket
TSW = Team Smith & Wesson (.356 TSW)
TU= Tango Uniform = "breasts" up, = dead (not functioning)
VLD = Very Low Drag
WC = WadCutter
WCF = Winchester Center Fire (.25-20 WCF, .32-20 WCF)
White box = Cheap ammo  (see WWB)
Win = Winchester (.308 Win, .32 Win Spl.)
WMR = Winchester Magnum Rimfire (.22 WMR)
WS = Weakside: opposite of strongside. Usually used for magazine carry.
WTB = Want To Buy
WTF = What the ****
WTS = Want To Sell
WTT = Want To Trade
WWB = "Winchester White Box" ammunition
XTP = Hornady eXtreme Terminal Performance
YMMV = Your Mileage May Vary.
 

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