I have 2 used scope risers for sale. They are YHM made for Bushmaster. They increase scope mounting height on flat-top uppers by 1/2”. Aluminum, 1 1/4” long. They mount using 2 cross bolts. Mounts are in good shape. Just a couple of marks.
They are listed on the Bushmaster website as “B.M.A.S. Scope Risers: 1 1/4" Length”
These are exactly what I have. Will also come with Weaver 1” rings.
Pics sent via text only. Camera is MIA.
$25 shipped for both mounts/rings. IM only.