A while back I made some 2-holed muzzles with shark spikes for RA barrles. I got a few requests for a 3-holed version for use with hybrid guns incorporating the RA barrel. So I made a small batch.
These black delrin muzzles fit the Rob Allen aluminum tuna barrels. Holes are 9/16" diameter, and the shark spike is 9/32" spear shaft material. The line wrap pin and line anchor are stainless, and the shark spike projects a little over 1-1/2" from the front of the muzzle.
I have 5 of the plain (no spike) muzzles. The holes on these are staggered for better band lay.
I have 2 of the 3-hole muzzles with a shark spike. Holes on this muzzle are straight in line, because I needed extra thickness on the bottom to hold the spike.
I also have 1 of the earlier batch of 2-hole muzzles left, with spike.
$45 each includes domestic priority mail shipping.