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Bird is the Word
October 27, 2009, 07:48 PM
As you may or may not know, NY is a post ban state. No bayonet holder, no threaded barrels without pinned/welded comps/brakes.

I want to go with a BCM 16" Mid Length Upper. So whether to ADCO or a local shop, I need to get the lug grinded off and the barrel situation taken care of.

Local shop owner said with the flattop upper and the standard front post sight, I could not mount a scope as it would mess up the line of sight (or something to that affect). Suggested getting a gas block.

Also, I am at a loss for whether I should do a thread protector, or spend money on a comp/brake.

Some help would be great, thanks in advance.

zoomie
October 27, 2009, 07:57 PM
Local shop owner said with the flattop upper and the standard front post sight, I could not mount a scope as it would mess up the line of sight (or something to that affect). Suggested getting a gas block.
Do you want to scope it or use iron sights? If your scope is about 3x or greater magnification, you don't see the front sight. If you get a 1x red dot or holo sight, you can cowitness with the front sight. The only time it'd be a problem would be with a low power scope, like a 1-4x. In that case, just get a low profile gas block, railed gas block for a folding front sight, or a gas block with an integral folding front sight.
Also, I am at a loss for whether I should do a thread protector, or spend money on a comp/brake.Get an unthreaded barrel and then it's a non-issue.

NSO_w/_SIG
October 27, 2009, 08:20 PM
I wouldn't worry about the FSB, it will work for almost every set up of optics you could go with.