Backpage gets a lot of press for its adult services categories, but another section that’s worth noting is the “Sports Equipment for Sale” section. Here are some examples of items for sale:
AR-15 rifles:

Bulk sales of 30-round magazines for AR-15 rifles. Only $8.49 if you buy 100+ at a time. Granted, it would suck if a deer got away before you could get off your 3,000th round for the kill shot.

And 75-round drums for AK-47s (for when 30 rounds isn’t nearly enough).

Here are two videos showing off the 75-round drum. First, a guy who shows what it’s like to be staring down the barrel of a gun being fired with one of these attached:
And a rapid-fire (75 rounds in 9 seconds) example:
What could possibly go wrong?