I built a 22" test barrel for the .17 Aguila to verify the operation and then built the final configuration 17.5" barrel for my AR rifle. I was just wondering how much velocity I may have lost if any. The actual barrel is 16" but I ran the barrel liner all the way to the muzzle of the fake flash hider. I'm using a Ciener 22 conversion unit and I modified the chamber adapter by installing a .17 cal. barrel liner from Brownell's and the whole device can be slid in and out of the barrel as one piece. I did this because I originally did the same thing in 22lr and it worked great and I just couldn't refuse trying it in the Aguila round.
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