I have 2 14.5 Gunner barrels and 1 14.5 pencil.
Accurate enough for me.
As with most barrels these days all 3 are IN MY OPINION over gassed.
All 3 cycle 100% on PMC Bronze .223 55gr with H3 buffers.
Longest I've shot the Gunners has been about 250yrds, hitting 10" steel with 1-4x without much trouble.
The barrel's accuracy and scope capability are beyond my personal ability.
I love how the guns handle with these barrels. The pencil is for my young son so I haven't shot it much.
I'm satisfied and would buy again.