UPDATED TITLE: These are "BUFFER TUBES" as listed on KAK's website as "simple pistol buffer tube" nothing fancy, just screw in to back of upper receiver to install your carbine length buffer and spring.

These are 35 bucks a piece in hand if ordered on line

These are factory KAK buffer tubes...they are not marked "KAK" but they were ordered from them during the "scare" of when ATF was going back on their decision that "AR pistols were no longer ok with braces"

Price is PER ITEM! 

Thanks