I was getting no answers in hand gun's so i brought it over here....

I ahve a firestorm 1911 fullsize 45acp and i was wondering if u guys could give me some input on Pro Mags.....Good or junk???

Why worry about them when USGI mags are $5-12? McCormic and Wilson 8 rounders are $22-26.
YMMV
M

Thats what i need to know i can get them for like 25 bucks and there 10 rounds but if there junk i will buy usgi 7 rounders

I have some Pro-Mags for my Sig228 & Beretta 92FS, functions like a champ.

However if you're unsure of whether any kind of mags will function in your gun.  I would buy one mag for whatever pistol you plan to use it in and shoot a few thousand rounds through and see what happens.  If it misbehaves, then return the mag to the vendor.  If you bought the mag throught the USPS, it maybe not be worth the expense to return to the vendor because you would have to pay the shipping which is expensive.