Henry D in NC from United States, NC Public Profile

No complaints. Good quality parts kit. Everything was in spec and fit an Aero lower perfectly.

This thumb rest fits most anything with a bottom picatinny rail. It's a little bulky, but given its versatility that's a minor concession. On most of the pistols I've tried it on there is room in the rail slot to position it forward or backward before tightening it down for a nice precise fit.

The MBUS 3 sight housings are slightly smaller and lower profile than the gen 2 while being much easier to adjust (no tool or makeshift implement is needed for the front sight, and the rear sight's small to large aperture selection is made easier with separate apertures separated by 45 degrees of rotation - no more prying apart with your fingernail - just a flip!). Durability and accuracy seem to be as good as previous versions. The front sight post is dual width while the rear sight large aperture seems to have a slightly enlarged diameter over previous versions, which gives you a better view of the outside prongs of the front sight. I was looking forward to the adjustability of the front sight, however it's the improvements to the rear sight aperture that will have me replacing all the backup iron sights on my ARs with the MBUS 3 versions.

The MBUS 3 sight housings are slightly smaller and lower profile than the gen 2 while being much easier to adjust (no tool or makeshift implement is needed for the front sight, and the rear sight's small to large aperture selection is made easier with separate apertures separated by 45 degrees of rotation - no more prying apart with your fingernail - just a flip!). Durability and accuracy seem to be as good as previous versions. The front sight post is dual width while the rear sight large aperture seems to have a slightly enlarged diameter over previous versions, which gives you a better view of the outside prongs of the front sight. I was looking forward to the adjustability of the front sight, however it's the improvements to the rear sight aperture that will have me replacing all the backup iron sights on my ARs with the MBUS 3 versions.