I doubt that many people will stick plastic soda bottles on the end of a gun if they want a muffler. If you fill them with cotton, to make them quiet, they affect accuracy. A good well designed muffler is well worth the money you spend. I believe that most will buy the muffler unless they have the proper tools to make one. Even folks like me that have the tools and the knowledge to make them will find it more work than fun after the first one we make. How often do you make your own bolts, nuts, and washers? It's just easier to go buy what you need.
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