This is a solid item in every sense.
There are two strap sling mounts and one swivel sling mount that can be unscrewed and swapped to either side.
The rubber plate is stiff and relatively uncomfortable and the adjustments are very slow and stiff but they are SOLID!
The hole for the top pin connector was molded off alignment so I had to disassemble the front segment (super easy) and dremmel down the plastic to stop squeezing the pin out of alignment (annoying and took several hours of ginger grinding). However I will point out that even after all that grinding the plastic was tough enough and thick enough in that section as to not risk compromising the integrity of the plastic or the connection
There's a replacement hook sling mount bracket available (currently out of stock at the time of this post) to replace the front strap sling mount bracket. I strongly encourage that item for anyone who wants to take full use of their Masada's sling-ability.
I give this product a neutral 3 because while i LIKE it better than the Masada's folding stock, in function and form it is effectively the same. It has better cheek adjustment, slower shoulder adjustment, uses the same butt pad and starts two inches longer. Not the best magpul stock i've ever had and not what i would call an upgrade per se, rather a lateral adjustment based on taste.
Easy to swap sling parts
Easy to disassemble
Required some dremmeliing to fit, may have been a rarity
Rubber pad is uncomfortable
Shoulder/cheek adjustments are slow and stiff, may just take some breaking in, is worth it for the solid adjustment seating