Forum: 300 Whisper Rifles and Pistols
01-18-2011, 11:30 PM
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Replies: 3
Views: 890
Mine has an M4-type barrel extension, but a...
Mine has an M4-type barrel extension, but a standard-type upper. No problems so far, a couple of thousand rounds.
You could always use a Dremel or a chain saw file and carefully notch the...
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