Nerf Mega Mastodon
You could wait for Black Friday. Orrrr, you could make today Red & Orange with Accents of White & Black Friday, and get the Nerf N-Strike Mega Mastodon a solid 6 weeks early so you'll have time to test it out yourself...make sure it works and everything...doesn't need to be returned for a new one because it just showed up with a busted top handle that looks like it was broken in anger...before your kid opens it up on Christmas morning, and calls you the best dad ever for giving him Nerf's very first motorized Mega blaster.
By the power of Nerf design genius and (a whopping) 6 x D batteries, the Nerf Mega Mastodon shoots 24 Mega Whistler darts from its auto-rotating drum. One right after the other at rapid-fire speed, and with Mom-incensing sound effects, it fires its projectiles up to 100' apiece. Also, like the tusked behemoth it takes its name from, the Mastodon is real, real big.
The Mega Mastodon package includes the blaster, the 3-piece drum, drum case, 2 drum covers, handle, 24 darts, and instructions for use. You'll have D-up on the batteries separately.