Here's one list for ya!
2A: Second Amendment
A well regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms, SHALL NOT be INFRINGEd.
4473: Federal Firearms Application
77R: Maryland Firearms Application
§: section in laws and regulations
§§: multiple sections in laws and regulations
AAR: After Action Report
ACP: Automatic Colt Pistol
AFAIK: As Far As I Know
AG: Attorney General
AGC: Associated Gun Clubs
AH: Amazing Horse
AIWB: Appendix carry inside the waists band
AK: Avtomat Kalashnikova
ALG: Assault Long Gun
AMF: Adios My Friend
AO: Area of Operations
AOR: Area of Responsibility
AOW: Any Other Weapon
AR-15: ArmaLite Rifle-15
ATF: (Bureau of) Alcohol, Tobacco Firearms (and Explosives)
AW: Assault Weapon or Automatic Weapon
AWB: Assault Weapons Ban
BAR: Browning Automatic Rifle
BATFE: Bureau of Alcohol, Tobacco, Firearms and Explosives
BB: Badge Bunny (or BikeBreath
)
BCG: Bolt Carrier Group
BFH: Big Friendly Hammer
BFW: Big Friendly Wrench
BG&S: Bollinger Gunsmithing and Sales
BGOS: Battered Gun Owner Syndrome
BHOBS: Booger Hook Off Bang Switch
BHR: Butt Hurt Report
BIT: Basic Instructor Training
BLE: Box Lock Ejector
BLNE: Box Lock Non-ejector
BLO: Boiled Linseed Oil
BMG: Browning Machine Gun
BOGSAT: Bunch of Guys Sitting Around a Table
BOHICA: Bend Over Here It Comes Again
BOK: Blow Out Kit
BOLO: Be On the LookOut
BP: Black Powder or Bass Pro
BPS: Bass Pro Shops
BSCAW: Banned-So-Called Assault Weapons
BSS: Browning Side by Side
BT: Boat Tail
BTFE: Beaver Tail Forend
BTHP: Boat Tail Hollow Point
BTW: By the Way
BUIS: Back Up Iron Sights
C3: Carroll County Crew
C&C: Cash and Carry
C&R: Curios and Relics
CAI: Century Arms International
CC: Concealed Carry or Case Color or Circuit Court
CC42A: Carroll County for 2nd Amendment
CCW: Carrying a Concealed Weapon or Counter Clock Wise
CFP: Concealed Firearms Permit
CFR: Code of Federal Regulations
CHF: Cold Hammer Forge
CHP: Concealed Handgun Permit
CIA: Central Intelligence Agency
CMP: Civilian Marksmanship Program
CMV: Chrome Moly Vanadium
COMAR: Code of Maryland Regulations
COTUS: Constitution of the United States
CP: Control Panel
CSMF:
CTD: Cheaper Than Dirt
CZ: Česká Zbrojovka
DA: Double Action
DAO: Double Action Only
DA/SA: Double Action/Single Action
DB: DooshBag
DC: Designated Collector
DFT: Don't Feed (the) Troll(s)
DGU: Defensive Gun Use
DHS: Department of Homeland Security
DINO: Democrat In Name Only
DMR: Designated Marksman Rifle
DNR: Department of Natural Resources
DSL: Detachable Side Locks
DOJ: Department of Justice
DOS: Denial of Service
DDOS: Distributed Denial of Service
DSG: Dick's Sporting Goods
DT: Double Triggers
EBR: Enhanced Battle Rifle or Evil Black Rifle
EDC: Every Day Carry
EOTWAWKI: End Of The World As We Know It
ETA: Edit to Add or Estimated Time of Arrival
FA: Full Automatic
FAQ: Frequently Asked Questions]
FBI: Federal Bureau of Investigation
FCG: Fire Control Group
FDE: Flat Dark Earth
FCG: Fire Control Group
FFL: Federal Firearms Licensee
FIFY: Fixed It For You
FMJ: Full Metal Jacket
FN: Fabrique Nationale
FNG: F'ing New Guy
FOPA: Firearm Owner Protection Act
FP: Flat Point
FSA: Firearm Safety Act (aka Senate Bill 281, Chapter 427)
FSB:
FTE: Failure to Eject
FTF: Failure to Fire or Face to Face
FTL: Failure to Load
FTMP: For The Most Part
FTR: For the Record
FTW: For the Win
FWIW: For What It's Worth
G&S: Good and Substantial
GA: General Assembly or Gauge
GB: Gun Broker or Glen Burnie
GFSZA: Gun Free School Zones Act
GGWAG: Good Guy With A Gun
GM: Gander Mountain
GOA: Gun Owners of America
GR: Grain
GRPC: Gun Rights Policy Conference
GSW: Gun Shot Wound
GTG: Good to Go or Got to Go
HAND: Have a Nice Day
HBAR: Heavy Barrel Rifle
HD: Home Defense
HJC: House Judiciary Committee
HPT: High Pressure Tested
HQL: Handgun Qualification License
HRB: Handgun Roster Board
IANAL: I Am Not A Lawyer
IBTBH: In Before the Butt Hurt
IBTL: In Before the Lock
IDK: I Don't Know
IIRC: If I Recall Correctly, If I Read Correctly
IMHO: In My Humble Opinion
IP: Industry Partner or Internet Provider or Internet Protocol or Internet Protocol (address)
ISWYDT: I See What You Did There
IWLA: Isaac Walton League of America
IWPD: It's Way Past Due
JABC: Just Another Belgian Clunker
JBT: Jack Booted Thug
JHP: Jacketed Hollow Point
JPAS: Joint Personnel Adjudication System
KISS: Keep It Simple Stupid
LBK: Lower Build Kit
LE: Law Enforcement
LEO: Law Enforcement Officer
LGS: Local Gun Shop/Store
LHUN: Lord Help Us Now
LIV: Low Information Voter
LMG: Light Machine Gun
LP: Large Pistol (primer)
LPK: Lower Parts Kit
LR: Long Rifle or Large Rifle (primer)
LRSTC: Loch Raven Skeet and Trap Center
LTCH: License to carry a handgun
LWRC: Leitner Wise Rifle Company
M&P: Military and Police
MD: Match Director
MDS: Maryland Shooters
MG: Machine Gun
MLFDA: Maryland Licensed Firearms Dealers Association
MOA: Minute of Angle
MOM: Martin O'Malley
MPI: Magnetic Particle Inspected
MR: Matted Rib
MRB: Mid Rib Bead
MSI: Maryland Shall Issue
MSAR: Maryland Small Arms Range
MSP: Maryland State Police
MSR: Modern Sporting Rifle
MSRPA: Maryland State Rifle & Pistol Association
MWAG: Man With a Gun
NCR: National Capital Region
ND: Not Disapproved or Negligent Discharge
NDA: Non-Disclosure Agreement
NDAA: National Defense Authorization Act
NFA: National Firearms Act
NIB: New in Box
NiBX- Nickle Boron
NICS: National Instant Criminal (Background Check) System
NOAA: National Oceanographic and Atmospheric Adminstration
NRA: National Rifle Association
NRA-ILA: National Rifle Association - Institute for Legislative Affairs
NSA: National Security Agency
NSCA: National Sporting Clays Association
NSFW: Not Safe For Work
NSSA: National Skeet Shooting Association
NST: Non-Selective Trigger
NTN: NICS Transaction Number
OAL: Overall Length
OC: Open Carry or Ocean City
OD: Olive Drab
OEM: Original Equipment Manufacturer
OH: Open Holster
OOS: Out of Stock
OP: Original Post or Original Poster
OT: On Target
OWB: Outside the wait band
O/U: Over/Under
PBJ: Probation Before Judgement
PG: Pistol Grip
PII: Personally Identifiable Information
PM: Private Message
POA: Point of Aim
POC: Point of Contact
POI: Point of Impact
POS: Point of Sale
POTUS: President of the United States
PPW: Paperwork
PSA: Public Safety Article or Palmetto State Armory
QFT: Quoted For Truth
RAS: Reasonable Articulated Suspicion
RD: Round
RDIAS:Registered Drop In auto-sear
RF: Rimfire
RKBA: Right to Keep and Bear Arms
RN: Round Nose
RO: Range Officer
ROE: Rules of Engagement
RSO: Range Safety Officer
SA: Single Action
SAA: Single Action Army
SAF: Second Amendment Foundation
SARU: Spousal Ammo Retrieval Unit
SAW: Squad Automatic Weapon
SB281: Senate Bill #281 aka Firearms Safety Act of 2013
SBP: Skeleton Butt Plate
SBR: Short Barreled Rifle
SBS: Short Barrel Shotgun
SBT: Single Barrel Trap (gun)
SCI: Sensitive Compartmented Information
SCMIIW: Somebody Correct Me If I am Wrong
SCOTUS: Supreme Court of the United States
SCSG: South Carroll Sporting Goods
SD: Shooter's Discount
SFE: Splinter Forend
SKS: Samozaryadnyj Karabin system Simonova
SLE: Slide Lock Ejector
SNLE: Side Lock Non Ejector
SP: Soft Point or Small Pistol (primer)
SMH: So Much Hate or Shaking My Head
SMIB: Southern Maryland In-Bred
SNAFU: Situation Normal, All F'd Up
SO: Safety Officer
SOG: Standard Operating Guideline
SOP: Standing Operating Procedure or Standard Operating Procedure
SPR: Specialist Precision Rifle
SR: Small Rifle (primer)
SSS: Shoot, Shovel, Shutup
SST: Selective Single Trigger
SU: Spousal Unit
SWAG: Scientific Wild A** Guess
SWC: Semi Wad Cutter
SWMBO: She Who Must Be Obeyed
SXS: Side by Side
SYG: Stand Your Ground
TANSTAAFL: There Ain't No Such Thing As A Free Lunch
TCSC: Thurmont Conservation and Sportsmen Club
TIA: Thanks in Advance
TLDR: Too Long, Didn't Read
TPM: Time/Place/Manner (of carry); Technical Performance Measure(s)
TS: Top Secret (security clearance)
UBC: Universal Background Check
UPK: Upper Parts Kit
USCCA: US Concealed Carry Association
USC: United States Code
USSC: United States Supreme Court Supreme Court
VCDL: Virginia Citizens Defense League
VR: Vented Rib
WAG: Wild A** Guess
WC: Water Cooler
WCF: Windchester Centerfire
WM: Walmart
WROL: Without Rule of Law
WTB: Wanted to Buy
WTH: What the Hell
WTMI: Way Too Much Information
WTS: Wanted to Sell
WTT: Wanted to Trade
WWB: Winchester White Box
YMMV: Your Mileage May Vary
