Normally $133 for set (upper and lower). I have the Matrix 9mm set and the fit and finish is great. Wouldn’t hesitate to buy the 5.56 set if I needed them.
Great deal! Matrix Aerospace is the manufacturer of Rugers SR556 and SR762 receivers and these are identical. I have there receiver sets in 9mm, 5.56 and 7.62 and couldn’t be happier.