"Custom"
"Stippled"
"Upgraded"
You have to understand, Armslist has it's own language. I have prepared this quick reference guide to help you:
"DO YOUR RESEARCH"
This means the seller wants you to go find the most ridiculous buy it now price on gunbroker and consider that as fair market value.
"NO LOWBALLING"
This means the seller's heinous MSRP +$10 price for a used firearm is firm.
"ONLY INTERESTED IN TRADES IN MY FAVOR"
I will only trade if you are willing to give me something for nothing. My terd is worth your diamond.
"DON'T WASTE MY TIME"
This means the buyer prefers to use his time endlessly bumping his ad for some hunk of overpriced crap rather than conversing with potential buyers making reasonable offers.
"FULLY TACTICAL"/"DECKED OUT"/"ALL THE BELLS AND WHISTLES"/"LOTS OF UPGRADES"
In it's simplest form, this means "I put some plastic Tapco crap on the firearm". Be prepared to pay 500% market value for each rail and peice of plastic that attaches to a rail. Don't even ask what flashlights are valued at.
"NEED THIS THING GONE"
But not bad enough to put a reasonable price on it.
"RARE"/ "COLLECTIBLE"
Old, but likely neither.
"YOU WONT FIND ANOTHER LIKE THIS ONE"
There's several on gunbroker right now.
"PRICED FOR QUICK SALE"
No, it's not, but in using this phrase, the seller hopes you will think you have stumbled on a real deal and snatch it up.
"CUSTOM CAMO FINISH"
I sponged craft paint all over it.
"CUSTOM GLOCK"
My bad stipple job and Zev recoil spring double the value.