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3/7/2008 4:28:04 PM EDT
Ive heard the Colt vs. Everyone debate but what I am interested in is who makes good mil-spec parts. I am building a an ar-15 and am trying to decide which upper, barrel and BCG to use. I am looking for something that is not only going to be reliable but also offer the longest possible life.

any recommendations on which manufacter to get?

I respect the value of milspec parts but why is it that the military spends 700 on a typical M16-A4  yet if a civilian would buy a Milspec semi auto version they would be looking to spend more that twice that?
Can a wholesale discount really make up the difference, especially when its a known fact that the governemnt tends to OVER pay for everything?

ALSO:

with all the reports of equiptment failure coming from the field, is there anything better than milspec quality parts?  perhaps competition parts?  Titianium Nickel lined bolts? titanium firing pins? Chrome lined Bolts? ....  ????  
3/7/2008 4:33:34 PM EDT
[#1]
Go over to Denny's get one of his chrome lined operator barrels with BCM's bolt group. IMO the BCM bolt group is better than mil spec. Use a CMT upper receiver, and a CMT LPK and your about as good as you can get.
3/7/2008 5:16:26 PM EDT
[#2]
Well according to some on here your not likely to get something near Mi-spec from any of the semi-auto parts suppliers.  Why, because they don't know what the specs are in the technical data package that Colt and FN were supplied by the U.S.Government so they could produce rifles to the requirements of the Government.(what a runon sentence)  CMT or LMT may have contracts.  Others that know may chime in.
So you can join the infantry to shoot Mil-spec rifles or try to get decent quality parts that will serve your purposes.  Most parts suppliers are selling parts that are good enough.  
Get a barrel made by Colt,FNMI or another military supplier in the past(SAK & E marked).  They are not plentiful but they are available every now and then.
I understand Bushmaster had a limited contract in the past so they may make their stuff to mil-spec as well.
Again most other parts available are good enough to make a reliable rifle that will last generations.  My 2 cents.
3/7/2008 5:42:45 PM EDT
[#3]

Quoted:
Well according to some on here your not likely to get something near Mi-spec from any of the semi-auto parts suppliers.  Why, because they don't know what the specs are in the technical data package that Colt and FN were supplied by the U.S.Government so they could produce rifles to the requirements of the Government.(what a runon sentence)  CMT or LMT may have contracts.  Others that know may chime in.
So you can join the infantry to shoot Mil-spec rifles or try to get decent quality parts that will serve your purposes.  Most parts suppliers are selling parts that are good enough.  
Get a barrel made by Colt,FNMI or another military supplier in the past(SAK & E marked).  They are not plentiful but they are available every now and then.
I understand Bushmaster had a limited contract in the past so they may make their stuff to mil-spec as well.
Again most other parts available are good enough to make a reliable rifle that will last generations.  My 2 cents.


I would direct you here.
www.ar15.com/forums/topic.html?b=3&f=118&t=360169
3/7/2008 6:39:34 PM EDT
[#4]
Good link M4builder.
Conclusion:There are a few suppliers that are privy to the Government's requirements.  Most are not.  Most parts that are available are from those that are not but it's like guessing the winning lottery numbers to predict when or if any part from any supplier will fail.  Seems only those in the military can get complete rifles or all the parts of one built to the .Gov standard and they still have failures.
Moral as shown in those threads:
Use good parts preferably from past or present Government contractors if you can get them.
Shoot your rifle to make sure it is reliable.
Have spares on hand because parts will break.
Run your rifle wet with lube.
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