Dunno. We are just fun shooters and not collectors. For us if a good M1 trigger housing group works fine then we are happy. Mix Masters are OK. We do upgrade to the late flip safety and late mag catch. Muscle memory.
If the new M1 trigger housing group connected with the new to us Carbine has a M2 sear, we trade that out also. The M2 sear goes into the M2 Carbine spare parts bin. Is that trigger housing group collectible?
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