It"s time to buy one of these.

^^^

Lessee...aside from 60 seconds of sustained fire being enough to melt the barrels...

60 seconds × 3 guns × 100 rounds/sec/gun = 18000 rounds.

How expensive is good 7.62x51mm ammo?
 
The RoF for the mini is about 66/sec at the 4000rpm setting. The motors usually have a 15sec. duty cycle, so a full minute of firing is almost out of the question. 15sec. x 3 guns x 66rps = 2970rds At a price of about $175/1000 for 7.62x51 thats almost $525 in 15 sec.
 
Doesn't mean that someone can't jerryrig it to fire 60 seconds and combine enough belts to supply 12,000 rounds though. Not that anyone ever would since it would make the gun practically useless. Since I am a full-time student, I had made less than 1000 dollars last year.
 
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