That's fairly easy really... there is an Exel file in the tools section authored by someone named SubXero that contains all the ids_name #'s for the various weapons. Here below are the ones for the level 10 guns of which you speak.

263536 "ONYX"
263537 "BLOODSTONE"
263538 "JADE"
263539 "DIAMONDBACK"
263540 "IRON HAMMER"
263541 "SILVER FIRE"
263542 "GOLDEN BLADE"
263543 "BLUE BLAZE"
263544 "DARK BLOSSOM"
263545 "WILD FIRE"
263546 "THOR'S HAMMER"
263547 "PROMETHEUS"
263548 "GUARDIAN"
263549 "CERBERUS"
263550 "ARCHANGEL"

Now, using bini.exe to render freelancer\data\equipment\weapon_equip.ini into a text file (which does not alter the original, but merely makes a text copy), you will be able to look up the numbers above using the edit menu, "find" feature in notepad and come up with the nicknames of the above guns... For instance:

263536 "ONYX" - nickname = special_gun01
263537 "BLOODSTONE" - nickname = special_gun02
263538 "JADE" - nickname = special_gun03
263539 "DIAMONDBACK" - nickname = special_gun04
263540 "IRON HAMMER" - nickname = special_gun05
263541 "SILVER FIRE" - nickname = special_gun06
263542 "GOLDEN BLADE" - nickname = special_gun07
263543 "BLUE BLAZE" - nickname = special_gun08
263544 "DARK BLOSSOM" - nickname = special_gun09
263545 "WILD FIRE" - nickname = special_gun10
263546 "THOR'S HAMMER" - nickname = special_gun11
263547 "PROMETHEUS" - nickname = special_gun12
263548 "GUARDIAN" - nickname = special_gun13
263549 "CERBERUS" - nickname = special_gun14
263550 "ARCHANGEL" - nickname = special_gun15

So far so good! Now all you have to do is put them into the market_misc.ini file for the place you want to buy them. Manhattan is Li01 so (having already made the freelancer\data\equipment\market_misc.ini file into a text file using bini.exe, and having renamed the original to market_misc.ini.old and having renamed the bini converted file from market_misc.ini.txt to simply market_misc.ini) you merely put the weapon nicknames into the bottom of the aforementioned section like so:

[BaseGood
base = Li01_01_base
MarketGood = li_gun01_mark01, 0, -1, 10, 10, 0, 1
MarketGood = li_gun01_mark02, 0, -0.200000, 10, 10, 0, 1
MarketGood = li_gun01_mark03, 2, 0.100000, 10, 10, 0, 1
MarketGood = li_gun01_mark05, 10, 0.400000, 10, 10, 0, 1
MarketGood = li_gun02_mark01, 0, -1, 10, 10, 0, 1
MarketGood = li_gun02_mark02, 0, -0.200000, 10, 10, 0, 1
MarketGood = li_gun02_mark03, 2, 0.100000, 10, 10, 0, 1
MarketGood = li_gun02_mark05, 10, 0.400000, 10, 10, 0, 1
MarketGood = li_turret01_mark01, 0, -1, 10, 10, 0, 1
MarketGood = li_turret01_mark02, 2, -0.200000, 10, 10, 0, 1
MarketGood = li_turret01_mark03, 10, 0.200000, 10, 10, 0, 1
MarketGood = li_turret02_mark03, 10, 0.200000, 10, 10, 0, 1
MarketGood = ge_s_thruster_01, 0, -1, 10, 10, 0, 1
MarketGood = missile01_mark01, 0, -1, 10, 10, 0, 1
MarketGood = missile01_mark01_ammo, 0, -1, 50, 50, 0, 1
MarketGood = missile01_mark02_ammo, 2, -1, 50, 50, 0, 1
MarketGood = missile01_mark03_ammo, 10, -1, 50, 50, 0, 1
MarketGood = missile01_mark04_ammo, 22, -1, 50, 50, 0, 1
MarketGood = missile01_mark05_ammo, 30, -1, 50, 50, 0, 1
MarketGood = missile02_mark01, 0, -1, 10, 10, 0, 1
MarketGood = missile02_mark01_ammo, 0, -1, 50, 50, 0, 1
MarketGood = missile02_mark02_ammo, 2, -0.200000, 50, 50, 0, 1
MarketGood = missile02_mark03_ammo, 10, 0.200000, 50, 50, 0, 1
MarketGood = missile02_mark04_ammo, 22, 0.400000, 50, 50, 0, 1
MarketGood = missile02_mark05_ammo, 30, 0.750000, 50, 50, 0, 1
MarketGood = missile03_mark01, 0, -1, 10, 10, 0, 1
MarketGood = missile03_mark01_ammo, 0, -1, 50, 50, 0, 1
MarketGood = missile03_mark02_ammo, 6, -1, 50, 50, 0, 1
MarketGood = missile03_mark03_ammo, 22, -1, 50, 50, 0, 1
MarketGood = missile03_mark04_ammo, 30, -1, 50, 50, 0, 1
MarketGood = cruise_disruptor01_mark01_ammo, 2, -1, 50, 50, 0, 1
MarketGood = cruise_disruptor01_mark02_ammo, 26, -1, 50, 50, 0, 1
MarketGood = torpedo01_mark01_ammo, 10, -1, 50, 50, 0, 1
MarketGood = torpedo01_mark02_ammo, 30, -1, 50, 50, 0, 1
MarketGood = mine01_mark01, 0, -1, 10, 10, 0, 1
MarketGood = mine01_mark01_ammo, 0, -1, 50, 50, 0, 1
MarketGood = mine01_mark02_ammo, 2, -1, 50, 50, 0, 1
MarketGood = mine01_mark03_ammo, 10, -1, 50, 50, 0, 1
MarketGood = mine01_mark04_ammo, 22, -1, 50, 50, 0, 1
MarketGood = mine01_mark05_ammo, 30, -1, 50, 50, 0, 1
MarketGood = mine02_mark01, 0, -1, 10, 10, 0, 1
MarketGood = mine02_mark01_ammo, 0, -1, 50, 50, 0, 1
MarketGood = mine02_mark02_ammo, 6, -1, 50, 50, 0, 1
MarketGood = mine02_mark03_ammo, 16, -1, 50, 50, 0, 1
MarketGood = mine02_mark04_ammo, 26, -1, 50, 50, 0, 1
MarketGood = mine02_mark05_ammo, 30, -1, 50, 50, 0, 1
MarketGood = ge_s_repair_01, 0, -1, 100, 100, 0, 1
MarketGood = ge_s_cm_01, 0, -1, 10, 10, 0, 1
MarketGood = ge_s_cm_01_ammo, 0, -1, 50, 50, 0, 1
MarketGood = ge_s_cm_02_ammo, 2, -1, 50, 50, 0, 1
MarketGood = ge_s_cm_03_ammo, 6, -1, 50, 50, 0, 1
MarketGood = shield01_mark01_lf, 0, -1, 10, 10, 0, 1
MarketGood = shield01_mark02_lf, 0, -1, 10, 10, 0, 1
MarketGood = shield01_mark01_hf, 0, -1, 10, 10, 0, 1
MarketGood = shield01_mark02_hf, 0, -1, 10, 10, 0, 1
MarketGood = shield01_mark01_fr, 0, -1, 10, 10, 0, 1
MarketGood = shield01_mark02_fr, 0, -1, 10, 10, 0, 1
MarketGood = ge_s_battery_01, 0, -1, 100, 100, 0, 1
marketgood = special_gun01, 0, -1, 10, 10, 0, 1 ;<==start here
marketgood = special_gun02, 0, -1, 10, 10, 0, 1
marketgood = special_gun03, 0, -1, 10, 10, 0, 1
marketgood = special_gun04, 0, -1, 10, 10, 0, 1
marketgood = special_gun05, 0, -1, 10, 10, 0, 1
marketgood = special_gun06, 0, -1, 10, 10, 0, 1
marketgood = special_gun07, 0, -1, 10, 10, 0, 1
marketgood = special_gun08, 0, -1, 10, 10, 0, 1
marketgood = special_gun09, 0, -1, 10, 10, 0, 1
marketgood = special_gun10, 0, -1, 10, 10, 0, 1
marketgood = special_gun11, 0, -1, 10, 10, 0, 1
marketgood = special_gun12, 0, -1, 10, 10, 0, 1
marketgood = special_gun13, 0, -1, 10, 10, 0, 1
marketgood = special_gun14, 0, -1, 10, 10, 0, 1
marketgood = special_gun15, 0, -1, 10, 10, 0, 1

Another way to do this is to make another file with just your special weapons in it and reference it in the freelancer.ini file (after turning off the "read only" attribute of course). So do this... Open up notepad, get a blank page and paste this in:

[BaseGood
base = Li01_01_base
marketgood = special_gun01, 0, -1, 10, 10, 0, 1
marketgood = special_gun02, 0, -1, 10, 10, 0, 1
marketgood = special_gun03, 0, -1, 10, 10, 0, 1
marketgood = special_gun04, 0, -1, 10, 10, 0, 1
marketgood = special_gun05, 0, -1, 10, 10, 0, 1
marketgood = special_gun06, 0, -1, 10, 10, 0, 1
marketgood = special_gun07, 0, -1, 10, 10, 0, 1
marketgood = special_gun08, 0, -1, 10, 10, 0, 1
marketgood = special_gun09, 0, -1, 10, 10, 0, 1
marketgood = special_gun10, 0, -1, 10, 10, 0, 1
marketgood = special_gun11, 0, -1, 10, 10, 0, 1
marketgood = special_gun12, 0, -1, 10, 10, 0, 1
marketgood = special_gun13, 0, -1, 10, 10, 0, 1
marketgood = special_gun14, 0, -1, 10, 10, 0, 1
marketgood = special_gun15, 0, -1, 10, 10, 0, 1

Now save this file with a new name (after selecting "all files" in the notepad save window) as, oh I don't know... maybe:

my_market_misc.ini

Then open up freelancer.ini (I can't remember if it is originally encrypted or not, but if it is and you have already changed its "read only" attribute, then use bini.exe to render it into a text file, rename the original, thus preserving it... a good thing to do as a backup anyway, and then rename the text file to freelancer.ini). Scroll down past the sections on sound and equipment and ships to the secion on marketing... it will read like this:

markets = equipment\market_misc.ini
markets = equipment\my_market_misc.ini <===see... put it here!
markets = equipment\market_ships.ini
markets = equipment\market_commodities.ini
NewCharDB = characters\NewCharacter.ini
WeaponModDB = equipment\WeaponModDB.ini
rtcslider = scripts\rtcslider.ini

Save the file (again being sure you select "all files" as file type instead of just txt and when you fire up Freelancer you weapons will be for sale at the location of your choice.

You might want to put these guns in a few other places as well because in the course of events you will be at war with the liberty navy and police, so maybe in Leeds or somewhere in Kusari space would be another alternative.

JustSomeGuy

cool,now the nomad weaps (had a dream 'bout a dagger with nomad guns)