Used CompM5s with light salt but in 100% excellent functioning condition.. spent its entire life on a 300blk and has seen well under 1000 rounds.. 99% of those being subs. Don’t know where I put flip up lens covers. It sat in between a clip on thermal and 3x magnifier for the last several years, so I didn’t need them. Glass is clean. Comes on factory Aimpoint qd mount with 1/3 co witness riser. Would trade for a stripped or complete HK MR556a4 lower +\- cash or possibly other HK stuff.
