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Brass Tax
I am new to this forum and new to the 300 Whisper. I have been all over the web looking for info. Real simple:
1. What Subsonic Ammo/AR rifle combo works conisistanly together in .308?
2. Does an AR .308 lower receiver require modifications to use subsonic ammo? If yes, can other uppers be used with it?
Many Thanks!
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