Ok...I have often found that if I reduce the complexity of the challenge and break it into bite size chunks, the process goes a little smoother. With that in mind, lets pretend that we are starting with an M4/M16 variant. To further reduce the complexity, lets focus on the front end...everything forward of the upper receiver.
What characteristics are most desirable of the front end? i.e., floating/non-floating outer barrel, weight, rigidity, materials, accessory mounting, etc...
discuss...
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