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Commandos are assembled from whatever spare parts are available, so Model 733 Commandos can have A1-style upper receivers, A1-style upper receivers with case deflectors, or A2-style upper receivers, and M16A1-profile 1:7 or M16A2-profile 1:7 barrels. Depending on the specific models, current Commandos may have three-position fire control groups (safe/semi-automatic/three-round burst), or four-position having both full-automatic and burst.