Originally Posted By D_Man: Being brownells, looks like the barrel is a take-off from their "Proto" rifle, or maybe they just sold the barrel assemblies at some point?
Originally Posted By D_Man: Being brownells, looks like the barrel is a take-off from their "Proto" rifle, or maybe they just sold the barrel assemblies at some point?
Originally Posted By 50cal: 1-12" bore. Been a while since I've seen that. Is that a retro offering?
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It was used in Brownells Retro line on their Proto AR Rifle as shown above. Later it was sold as a barrel assy. with FSB and barrel nut/slip ring assy. during liquidation sales. Lastly, just the stripped barrel was sold until about a year ago. The front sight base was never available separately from Brownells.