this is going to be full size should i make a patent
i agree with hckrsvngo for it!
If you changed it enough so that it wasn't *exactly* like the one from Halo. Example: No halo logos, change the frame slightly (like removing/moving something), colors aren't the same, etc. If you did that then by all means get a patent
No, you shouldn't. Halo's flamethrower is the intellectual property of Bungie and Microsoft.