guns that have not been done

Title says it all what guns have not been done before on Instructables comment please

Picture of guns that have not been done
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Gau8-30 millimeter-7 barreled avenger though Im not sure how you would make it out of knex....
knex mad (author)  Fred the Penguin7 years ago
is that the one which are on planes
its on the a10 thunderbolt and thunderbolt 2
The SIG SG550-1 Sniper Rifle ?
L96 Artic Wolf~! Go Combat Arms! (:<
you gotta be kidding me.
I agree but knexsniper1 made an l96
knex mad (author)  Soopah Steve7 years ago
l96 has been done