IMHO, Colt goes the extra distance on these. It’s in the details.
The buffer tube (receiver extension) is finished in a nice matte finish, as opposed
to the shiny type 2 that most other brands offer.
The buffer tube is shaped to match the contour of the lower receiver for positive
retention of the buffer retainer with no fitting required.
Machine work on the buffer tube is top notch.
The threads on the buffer tube are clean, never any burrs or other defects.
The buffer tube is one piece.
The polymer stock has a nice matte finish that matches the rest of the rifle. As
opposed to a lot of aftermarket stocks which are shiny. No defects or short
comings in the molding of the stock, they’re always perfect.
All the parts are manufactured to spec, no short cuts taken on any parts.
The nut has the correct dimples for the stock to be “staked” on.
The latch assembly has the roll pin installed in the nut.
Correct metal buffer.
They always function properly, not fitting or adjustment required.
These are just the things of the top of my head.
Other reason I like them are:
The correct military version.
Looks correct, guess I’m use to seeing them.
Every aftermarket version I’ve examined has short comings to the above list.
This includes the new Style RRA and BM modes I’ve looked at.
Don’t pay more than about $130 for NIW.