TexasCHLforum.com

G192627 wrote:

gigag04 wrote:

What the Technical Design Plan is

What is that? I knew the rest, but that one was not one I'm familiar with.
(just bought my first AR a week ago... but have been reading and studying for a month or more)

It's also (and more commonly) known as the technical data package - the original specs and requirements for an m-4 or AR. If it's not a Colt (who owns the plans) then it literally is a copy. Firms that license the design for .mil production pay Colt a royalty and cannot use or sell a rifle built from it for commercial purposes.

If you don't need to know or understand the following listed terms, than most likely any off the shelf rifle from a major manufacturer will suit your needs, unless you need ultra precision like TAM with the varminting stuff. All the noise on the plethora of forums surrounding the AR platform are full of people that either want or need to know these things. I feel that in actual practice, this is a small percentage of AR shooters.

The difference between the various types of bolt carrier groups
What a carrier key is or how well it is staked
What M4 feed ramps look like
Which length gas system a rifle has
What the Technical Design Plan is
The HPT and MPI testing done on metal components.

But - of the weapons listed the DD is the "better" gun. All of them can be accurized for the right amount of coin.

As far as quality of individual components goes, you're looking at this:

RRA < S&W M&P < DD

However, if it's "just an AR" than all three will suit you fine. S&W is the best value, and DD is the best rifle of yours listed.