For AR15's I say stick with 5.56. I'm sure you're more than capable of building an AK from a receiver flat which would also be considered an 80% receiver if you really want to shoot 7.62x39. The magwell of the AR15 and the extreme taper of the 'x39 cartridge usually work alright but you can't beat an AK mag for feeding AK ammo.
Oh goodness, if you start working on guns I'll have to start direct depositing my pay into your account.
I believe the chrome lining was mainly for corrosion resistance and durability and one of the major downsides is that it's difficult to control the thickness and accuracy can suffer. As I understand it, the army's M-110 (variant of an AR10) sniper rifle lacks a chrome lined bore and chamber for this reason
Yes, chrome lining was for corrosion resistance but does make accuracy harder since it is difficult to get the plating uniform. Another reason why nitride is better.
According to KAC, the M110 does have a chrome-lined barrel. Probably the reason why it is spec'ed for 1.5 minute of angle (if I recall correctly).
You guys are killing me with the AR talk. I am saving up for one this winter. I have thought about building my own but I am not sure. I do want a Windham Weaponry AR-15 since they made right here in Maine.
As always advice is welcome.
Jeremy
I bought a Windham back in 2011 and have had no problems with it. I also have a Colt pre-ban carbine that someone built from an original Colt HBAR, the HBAR parts rebuilt into an A3 style with DS Arms parts, an LMT CQB piston carbine, and various rifles built from parts from DS Arms, Palmetto State, Anderson Rifles, Aero Precision, Brownells, etc, etc. In general, it is safe to go with milspec parts from wherever you feel comfortable with. I've got almost half the rifles chambered in 300 AAC Blackout now, mainly for pig hunting. All of them are reliable and get the job done. It's really hard for anyone with a modicum of skills to screw up an AR.
So, what kind of reputation does Del ton have as far as AR parts. I have one lined up for a even trade on a shop project that I have no money in, just some time. The upper is a full upper. Dust cover, forward assist, retractable sights, the whole nine yards chambered in 5.56. If I decided to do the trade, that would basically be free to me other than a few hours labor thats already been spent. Thoughts?
Delton has a decent reputation from what I've seen. I've also seen people talking trash about them on the interwebz. But that happens with nearly every brand except the top tier that is inhabited by hoards of fan boys: Larue, LMT, Daniel Defense, Noveske. Except my list may or may not agree with the "expert's" list on the webz. Opinions are like certain body parts....we all have them. Here is one example:
http://www.ar15.com/forums/t_1_5/1446406_AR_Manufacturer_Tier_Quality_Ranking.html
Here's a link to a thread from about two years ago, I guess it was a beat-to-death topic at the time. Seems the barrels aren't great, they have a 1/9 twist instead of 1/7, the front sight base isn't the right height for a flat top and probably some other stuff. I guess it's possible they have improved. There's too many brands for me to keep tabs on all of them.
http://www.m4carbine.net/showthread.php?106039-Windham-Weaponry-questions
Here is a good thread on addressing issues on less-than-top-quality AR's.
http://www.m4carbine.net/showthread...ught-a-BM-RRA-Stag-before-I-knew-better!-quot
See above. Also, when people on the thread start spouting caca like "Its been said here before and I firmly believe a rifle, at least one based on a mil. Platform should be a fighting tool first and anything else is secondary", I quickly lose interest in their opinion (the first thread). People on those boards also tend to obsess about all sorts of things that really shouldn't be a big deal. Too many people wring their hands over MPI testing of bolt carriers. The number that fail this testing is minuscule, so manufacturers spend a lot of time and money without a lot of return in terms of identifying defects. Maybe I've gotten a little cavalier since I've been shooting the M16/AR-15 since 1980...
I better quit before I drone on longer and get this moved to the "curmudgeon" thread. Bottom line is to not believe everything you read on the internet, buy from some place you are comfortable with, ask questions of folks you trust, and don't put your face too close on that first test shot....hahahaha