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colt m4 carbine


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Iam new to this site and new to the .22 tactical rifles. I have a M4 carbine ordered and waiting for it to arrive. I have been looking at the mods and upgrades everyone is doing, and iam wanting to change the polymer handguard for a quad rail. I have searched everywhere and i seen someone saying the 6.5" carbine length AR15 drop in rails will fit with my delta ring system. Can anyone confirm this before i buy parts? Iam also looking to remove the carry handle and put a scope on it.

I guess i should have ordered the m4 ops but i didnt know the differences until i already purchased the carbine.

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I took the carbine hand guards off my Colt M 4 (6 3/4") with D ring and replaced it with a $60.00 aluminum two piece 4 rail hand guard that fit into the D ring and clamped to the front cap  right behind the front sight.............Looks like a standard M 4 (OPs)

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