AQ planned for years and sent their A team to carry out the attacks, and on Flight 93 they were thwarted by a pick-up team made up of United Frequent Fliers. Many people look at 9/11 and wonder how we can stop an enemy like that. I look at FL93 and wonder, "How can we lose?". -- FromMyColdDeadHand
If you want to play at semantics, there is technically no such thing as "milspec". There is the technical data package or TDP, which describes in intimate detail the specifications of each model of firearm accepted by the government. It is a huge amount of information covering dimensions, procedures, materials, tolerances,... ad infinitum.
In terms of civilian AR-15s, none of them meet the TDP 100%. If they did they would be select fire M-16s, or M-4s. When something is said to be "milspec" that means it is built as close as possible to the TDP. Many parts of an AR can be 100% compliant with the TDP. Some cannot, like the FCG, but can be manufactured as closely as possible to that standard. That is really all that is important. If an AR is built as closely as possible to the TDP, then one can have a degree of confidence in the construction of that AR. Your would expect certain criteria to be met.
That does not mean that TDP is the only measure of quality, let alone the pinnacle of perfection. A KAC SR-15 deviates from the TDP in a number of areas. I would not say that makes it "substandard". Though as a general rule, most deviation from TDP is not for the better.
Deviation from TDP can be good or bad, and TDP rifles certainly do go down. All it does is provide a standard reference to compare against.
Go Ukraine! Piss on the Russian dead.
Jeez, even wiki has more facts than this thread.
Actually, there is a "military specification", at least four that I am aware of, six if you include the M4 series.
MIL-R-45587 - Rifles, 5.56mm: M16 and M16A1
MIL-R-63997 - Rifle, 5.56mm: M16A2
MIL-R-41135 - Rifle, 5.56mm: M16A2E3
MIL-DTL-32309 - Rifle, 5.56mm: M16A4
MIL-C-70599 - Carbine, 5.56mm: M4
MIL-C-71186 - Carbine, 5.56mm: M4A1
All rifles, carbines, and parts made in accordance with these specifications are "mil-spec". There can be "mil-spec" parts sold on the civilian market, if they are made in strict accordance with the military/Colt drawings, and tested in accordance with the applicable specification. However, since the drawings are proprietary to Colt's, and the military drawing can only be used for Government contracts, the only (legal) civilian source for "mil-spec" parts would be Colt's or a Colt's licensed producer. I mean, how else could you get access to Colt's proprietary drawings?
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Last edited by AndyLate; 02-20-21 at 18:43.
Just what I was looking for. Keep it going.
The ar15 was originally a military issue and not intended for the civilian market.
Learn something every day
There is not a universal size for commercial parts, each vendor would build to there own specs and commercial parts do not interchange. Now when a manufacturer builds mil spec parts with little variance between them, you will have a nice tight build. This is why when building a precision rifle you would want matched upper / lower and a matched barrel from a manufacturers that has great QC.
This is why there is a difference when building a rifle with parts from geissele vs parts from Anderson even when it’s just the receivers.
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