Colt AR-15, mil-spec?

spartan1980

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I'm wondering how I can find out if my AR is mil-spec or not?

Model

Match Target Competition HBAR 20"
serial # CCH01****


thanks
 
Have you ever looked at a MIL-spec? The whole thing is clearly only possible for volume buyers. Unless you think that Colt is destructively testing one gun per batch for their civilian customers, just out of the goodness of their heart?

There is no such thing as a MIL-spec AR-15 on the commercial market.
 
There are a great number of Mil-Spec parts on your rifle...the rifle proper is however not Mil-spec...in my experience the "closest" one can come is a 6921 top end with an LMT lower as far as carbines go...it is possible to duplicate that with a 20" and I have done so but you always need a different lower due to Colt's axis pin sizes...in any event it is "close" but still without a fun switch. Don't sweat it and enjoy.
 
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Mil-spec... not mil-spec...

What diff. does it make?

It's an AR and it shoots.


I'd go as far as to suggest "mil-spec" is just another way of saying
"built by the lowest bidder"
 
maybe I was asking the wrong question.

I have a 20" HBAR but would like to know if I can buy a carbine length upper - 16" etc. I have heard that it may not fit due to some of the pins.

is it possible for me to buy a LMT, STAG upper to put on the lower receiver I have?
 
As far as I know they all fit together. I've owned six different uppers (a 20 inch HBar too) in the past and I never had a problem, they were all snug and tight.
 
Have you ever looked at a MIL-spec? The whole thing is clearly only possible for volume buyers. Unless you think that Colt is destructively testing one gun per batch for their civilian customers, just out of the goodness of their heart?

There is no such thing as a MIL-spec AR-15 on the commercial market.

:agree:
Exactly. Think of Mil-spec as really anal testing (destructive, non destructive) that colt does with the rifles throughout the production cycle. By definition, only the military rifles are Mil-spec as far as I know. That doesn't mean that other rifles or production runs at Colt are not up to excellent standards as well, it just means that during production they are ripped off the line to test for consistency/quality etc. several times at several stages of production.
 
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maybe I was asking the wrong question.

I have a 20" HBAR but would like to know if I can buy a carbine length upper - 16" etc. I have heard that it may not fit due to some of the pins.

is it possible for me to buy a LMT, STAG upper to put on the lower receiver I have?

Some Colt commercial (large hole front pin with a screw) require offset adapters to fit on non Colt commercial receivers. If your rifle has a screw for a front pivot pin you need an adapter.
If it has a normal 'push" pin you are good to go.

Not the most technical description but It should get my point across, as some Colts can switch others need the adapter.
 
:agree:
Exactly. Think of Mil-spec as really anal testing (destructive, non destructive) that colt does with the rifles throughout the production cycle. By definition, only the military rifles are Mil-spec as far as I know. That doesn't mean that other rifles or production runs at Colt are not up to excellent standards as well, it just means that during production they are ripped off the line to test for consistency/quality etc. several times at several stages of production.

I don't have the milspec number handy, but if you search for it you can find it. All milspec means, is that it passed the tests set out in the milspec document. If I remember correctly, part of the testing is passing a certain tests with an allowable number of errors during the firing of 6000 rounds. Any rifle can claim to be milspec by running through these tests. Unfortunately, I don't think there is any way to prove it as you can't really get "certified" as having passed the military specifications for a certain piece of kit.

If you search for the milspec on the M16A2 and the M4 you can read all about it. It might take a while though. There is a lot of reading in there!!

From what I have read, the milspec is what is handed to customers bidding on supplying the specific item. The milspec is used in the selection process. I am not sure that the winning bidder must meet these specs again once the contract is awarded, but I am not sure on that one.
 
Some Colt commercial (large hole front pin with a screw) require offset adapters to fit on non Colt commercial receivers. If your rifle has a screw for a front pivot pin you need an adapter.
If it has a normal 'push" pin you are good to go.

Not the most technical description but It should get my point across, as some Colts can switch others need the adapter.


mine does have the screw. where can i buy / view one of these adaptors? im not familiar with them?
 
also, (as I am selling this firearm currently). every other person messaging me about it asks "is it mil-spec"...

thanks for the info.
 
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