07-12-2020, 02:22 AM
I'm running my 18" Satern cut rifled bbl in a Mega Arms Monolithic upper with a JP FMOS bcg and couldn't be happier. With my old crappy eyes I constantly get under 1 more groups. My best was 4 rounds into one ragged hole, then i flinched on the 5th, and opened it up to about 1/2 inch.

