Installation: Just copy and paste the script in your autoexec. under each alias there is a bind "key" "nvgs" just replace key with the letter of your choice

Note: to save keyboard space i have combined weapons only for terroist and counter-terroist together ex: if you are on the ct team and you want a m4a1 you press the key u binded it for but if your a terroist you can press the same key and get a ak47.

Heres the Script:
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//Weapon buy scripts

alias "primammo" "buy primammo"
bind "key" "primammo"
alias "secammo" "buy secammo"
bind "key" "secammo"
alias "glock" "buy glock; buy secammo"
bind "key" "glock"
alias "usp" "buy usp; buy secammo"
bind "key" "usp"
alias "p228" "buy p228; buy secammo"
bind "key" "p228"
alias "deagle" "buy deagle; buy secammo"
bind "key" "deagle"
alias "elite" "buy elite; buy fiveseven; buy secammo"
bind "key" "elite"
alias "m3" "buy m3; buy primammo"
bind "key" "m3"
alias "xm1014" "buy xm1014; buy primammo"
bind "key" "xm1014"
alias "mac10" "buy mac10; buy tmp; buy primammo"
bind "key" "mac10"
alias "mp5navy" "buy mp5navy; buy primammo"
bind "key" "secammo"
alias "ump45" "buy ump45; buy primammo"
bind "key" "ump45"
alias "p90" "buy p90; buy primammo"
bind "key" "p90"
alias "galil" "buy galil; buy famas; buy primammo"
bind "key" "galil"
alias "ak47" "buy ak47; buy m4a1; buy primammo"
bind "key" "ak47"
alias "scout" "buy scout; buyammo1"
bind "key" "scout"
alias "sg552" "buy sg552; buy aug; buy primammo"
bind "key" "sg552"
alias "awp" "buy awp; buy primammo"
bind "key" "awp"
alias "g3sg1" "buy g3sg1; buy sg550; buy primammo"
bind "key" "g3sg1"
alias "refresh" "buy primammo; buy secammo; buy vest; buy defuser; buy hegrenade"
bind "key" "refresh"
alias "vest" "buy vest"
bind "key" "buy vest"
alias "vesthelm" "buy vesthelm"
bind "key" "buy vesthelm"
alias "hegrenade" "buy hegrenade"
bind "key" "buy hegrenade"
alias "flashbang" "buy flashbang"
bind "key" "buy flashbang"
alias "smokegrenade" "buy smokegrenade"
bind "key" "buy smokegrenade"
alias "allgren" "buy flashbang; buy flashbang; buy hegrenade; buy smokegrenade"
bind "key" "allgren"
alias "defuser" "buy defuser"
bind "key" "buy defuser"
alias "nvgs" "buy nvgs; nightvision"
bind "key" "buy nvgs; nightvision"
alias "m249" "buy m249; buy primammo"
bind "key" "buy m249"

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Credits:
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aliases from: xze
Binds: Paul378