AAMOF: As a Matter of Fact
AFAIK: As Far As I Know
AKA: Also Known As
AOW: Any Other Weapon
APB: All Points Bulletin
ASAP: As Soon As Possible
AWB: Assault Weapons Ban
AWOL: Absent Without Leave
BATFE: Bureau of Alcohol, Tobacco, Firearms, and Explosives
BBL: Barrel
BDU: Battle Dress Uniform
BFE: Bum F**k Egypt, or the middle of nowhere
BG: Bad Guy
BOB: Bug Out Bag
BOHIC: Bend Over, Here It Comes
BTDT: Been There, Done That
BTT: Bump To Top
BTW: By the Way
BUG: Back Up Gun
BUIS: Backup Iron Sight
CAR: Carbine
CC: Concealed Carry
CCL: Concealed Carry License
CCP: Concealed Carry Permit
CCW: Carrying Concealed Warrant (or Weapon)
CHL: Concealed Handgun License
CHP: Concealed Handgun Permit
CIII: Class 3 Weapon
CMP: Civilian Marksmanship Program
CONUS: Continental United States
CQB: Close Quarters Battle
CYA: Cover Your Ass
DD: Destructive Device
DIAS: Drop In Auto Sear
DIY: Do It Yourself
D/L: Download
DOD: Department of Defense
DOT: Department of Transportation
DT: Double Tap
EBR: Evil Black Rifle
EMP: Electromagnetic Pulse
ETA: Estimated Time of Arrival or Edited to Add
FAQ: Frequently Asked Questions
FBI: Federal Bureau of Investigation
FCSA: Fifty Caliber Shooter's Association
FFL: Federal Firearms License
FMJ: Full Metal Jacket
FNG: ****ing New Guy
FTE: Failure to Eject or Failure to Extract
FTF: Face to Face or Failure to Fire or Failure to Feed
In Relation to sales/trades, Face to Face
FUBAR: F**ked Up Beyond All Recognition
FYI: For Your Information
G#: Glock Model Number X
GAP: Glock Automatic Pistol (.45 Caliber Variant)
GMT: Greenwich Mean Time
GNG: General Non-Glocking
GWB: George W. Bush
GSSF: Glock Sport Shooting Foundation
GT: Glock Talk
GOA: Gun Owners of America
HBAR: Heavy Barrel
H&K: Heckler & Koch
HTML: Hyper Text Markup Language
IANAL: I Am Not a Lawyer
IBTL: In Before Thread Lock
IDPA: International Defensive Pistol Association
IE: Internet Explorer
IED: Improvised Explosive Device
IIRC: If I Recall Correctly
IMHO: In My Honest/Humble Opinion
IMO: In My Opinion
IM: Instant Message
IPSC: International Practical Shooting Confederation
IWB: In The Waistband Holster
JAFO: Just Another F**king Observer
JHP: Jacketed Hollow Point
J/K: Just Kidding
JSP: Jacketed Soft Point
KB KaBoom!
KISS: Keep It Simple, Stupid
LBE: Load Bearing Equipment
LBV: Load Bearing Vest
LEA: Law Enforcement Agency
LEO: Law Enforcement Officer
LMAO: Laughing My Ass Off
LNIB: Like New in Box
LOL: Laugh Out Loud
LSWC: Lead Semi Wad Cutter
MOA: Minute of Angle
MSRP: Manufacturer's Suggested Retail Price
N/A: Not Applicable
NBCR: Nuclear, Biological, Chemical and Radiological
N/M: Never Mind
NRA: National Rifle Association
NIB: New In Box
NICS: National Instant Criminal Background Check System
NMLRA: National Muzzle Loading Rifle Association
OAF: OX & Alex Forum
OBO: Or Best Offer
OD: Olive Drab
OS: Operating System
OWB: Outside Waistband Holster
PCIPC: Post Count is Post Count
PD: Police Department
PEBKAC: Problem Exists Between Keyboard And Chair
PFM: Pure F**king Magic
PITA: Pain In the Ass
PM: Private Message
PO: Police Officer
POI: Point of Impact
PPPPPPP: Proper Prior Planning Prevents Piss Poor Performance (Also Known As the 'Seven P's')
Q&A: Questions and Answers
RKBA: Right To Keep and Bear Arms
ROFL: Rolling On the Floor Laughing
ROFLMAO: Rolling On the Floor Laughing My A$$ Off
SAAMI: Sporting Arms and Ammunition Manufacturers' Institute
SAF: Second Amendment Foundation
SAS: Second Ammendment Sisters
SASS: Single Action Shooting Society
SBR: Short Barreled Rifle
SBS: Short Barreled Shotgun
SHTF: S**t Hits the Fan
SIG: SIG Sauer
SMG: Sub Machine Gun
SNAFU: Situation Normal, All ****ed Up
SOL: S**t Outta Luck
SPR: Special Purpose Rifle
SS: Stainless Steel
S&W: Smith & Wesson
SWC: Semi Wad Cutter
TEOTWAWKI: The End Of The World As We Know It
TTIWWP: This Thread is Worthless Without Pictures
U/L: Upload
USGI: United States Government Issue
WCS: Worst Case Scenario
Whiskey Tango Foxtrot: NATO Phonetic Alphabet, See WTF
WMD: Weapons of Mass Destruction
WOT: War On Terror
WTB: Wanting to Buy
WTF: What the F**k?
WTS: Wanting to Sell
WTT: Wanting to Trade
WWB: Winchester White Box Ammunition
YMMV: Your Mileage May Vary