Will you customize anything for me? Posted on October 25, 2017November 9, 2017 by admin by admin MG Arms enjoys the challenge of building custom firearms. If you can dream it up, we will do our best to build it for you. We only have three criteria: Is it safe? Is it legal? Can you afford it? Post navigation Who’s Muzzle Break do you use?How do I get my firearm from you?