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View Full Version : Rebarelling for 300 Blackout- Parts interchangable??


brmfan
October 23, 2012, 10:53 AM
To rebarell a M4 proflile AR carbine to a 16" 300 BLK, will the A2 front sight base need to be replaced or can it be used?

brmfan
October 23, 2012, 02:05 PM
Found a barrel w/ FSB for a good price.