I found this one; hope it helps.............
Firearms Acronyms and Abbreviations
IWB- Inside Waist Band
OWB- Outside Waist Band
AIWB- Appendix Inside Waist Band
2A - Second Amendment
ACP - Automatic Colt Pistol (e.g. .45 ACP)
AE - Action Express (e.g. .50 AE)
AK - Avtomat Kalashnikova
ATF - Alcohol Tobacco and Firearms
Anti - short for someone who is anti-Second Amendment
AOW - Any Other Weapon
AP - Armor Piercing
API - Armor Piercing, Incendiary
APT - Armor Piercing, Tracer
AR - Often short for AR15, originally as in Armalite
AWB - Assault Weapon Ban
BATFE - Bureau of Alcohol Tobacco Firearms and Explosives
BAR - Browning Automatic Rifle
BC - ballistic coefficient
BCG - Bolt Carrier Group
BG - Bad Guy
BMG - Browning machine gun
BP - black powder
BT - Boat-Tailed
BUG - Backup Gun - Class 3, see NFA
BUIS - Back Up Iron Sight
C&R - Curio & Relic
Cal. - Caliber
CCDW - Carry Concealed Deadly Weapon
CCP - Concealed Carry Permit
CCRKBA - Citizens Committee for the Right to Keep and Bear Arms
CCW - Carry Concealed Weapon
CFP - Concealed Firearms Permit
CHL - Concealed Handgun License
CIII - Class 3, see NFA
CLDF - Civil Liberties Defense Foundation
CMP - Civillian Marksmanship Program
CQB - close quarters battle
CQC - close quarters combat
CSGV - Coalition to Stop Gun Violence, formerly National Coalition to Ban Handguns (NCBH)
CWP - Concealed Carry Permit
DA - Double Action
DAO - Double Action Only
DOD - Department of Defense
DOJ - Department of Justice
EBR - "Evil Black Rifle"
FFL - Federal Firearms License
FMJ - Full Metal Jacket
FN - Fabrique Nationale
FNH - Fabrique Nationale Herstal
FOID - Firearms Owner IDentification
FOP - Fraternal Order of Police
FOPA - Firearms Owner Protection Act
FP - Flat Point
FPS - Feet Per Second, commonly used to measure muzzle velocity
GA - gauge
GCA - Gun Control Act
GI - Government Issue
GOA - Gun Owners of America
GSSF - Glock Sport Shooting Foundation
HD - Home Defense
H&H - Holland & Holland
HP - Hollow Point
H&R - Harrington & Richardson
IDPA - International Defensive Pistol Association
ILA - Institute for Legislative Action (as in NRA-ILA)
IMR - Improved Military Rifle
IPSC - International Practical Shooting Confederation
JHP - Jacketed Hollow Point
JPFO - Jews for the Protection of Firearm Ownership
JSP - Jacketed Soft Point
LC - Long Colt (e.g. .45 LC)
LE - Law Enforcement
LEO - Law Enforcement Officer
LHP - Lead Hollow Point
LPK - Lower Parts Kit
LR - Long Rifle (e.g. .22 LR)
LRN - Lead, Round Nose
LSWC - Lead Semi-WadCutter
Mag - Magnum or short for magazine
MAIG - Mayors Against Illegal Guns
MG - Machine Gun
mm - millimeter
MOA - Minute of Arc/Angle
NAGR - National Association for Gun Rights
NATO - North Atlantic Treaty Organization (e.g 7.62 NATO a/k/a 7.62x51)
NBRSA - National Bench Rest Shooters Association
NCBH - National Coalition to Ban Handguns
NEF - New England Firearms
NFA - National Firearms Act
NICS - National Instant Criminal backgroud check System
NRA - National Rifle Association
NSSF - National Shooting Sports Foundation
OAL - Overall Length
OC - Open Carry or Oleoresin Capsicum (e.g. pepper spray)
O/U - Over/Under
PSI - Pounds per square Inch, measurement of pressure
Rem - Remington (e.g. .223 Rem)
RKBA - Right to Keep and Bear Arms
RNL - Round Nosed Lead
RRA - Rock River Arms
SA - Single Action or semi-auto
SA/DA - Single Action/Double Action
SAAMI - Sporting Arms and Ammunition Manufacturers Institute
SAA - Single Action Army
SAF - Second Amendment Foundation
SBR - Short Barreled Rifle
SBS - Short Barreled Shotgun
SHOT - Shooting Hunting and Outdoor Trades (e.g. SHOT Show)
SMG - Submachine gun
SJHP - Semijacketed Hollow Point
SJSP - Semijacketed Soft Point
SOT - Special Occupational Tax
SP - Soft Point
Spl - Special (e.g. .38 Spl)
SWAT - Special Weapons And Tactics
S&W - Smith & Wesson
SWC - Semi-WadCutter
TC - Thompson Center
USPSA - United States Practical Shooting Association
WC - WadCutter
WCF - Winchester Center Fire
Win - Winchester (e.g. .308 Win)
WMR - Winchester Magnum Rimfire (e.g. .22 WMR)
WSM - Winchester Short Magnum (e.g. .300 WSM)
YHM - Yankee Hill Machine