Are RRA barrels chrome lined?

[Fatelvis]

I just bought a used, standard config, chrome moly, RRA A2 upper. Does anyone know if the barrel or chamber is chrome lined? I tried to contact RRA, but they`re not open until Mon. I cant wait that long for an answer!! LOL

 

[Quintin Likely]

I don't think they are. My NM A2 RRA upper isn't.

 

[Harry Tuttle]

Pete from Legal Transfers can get Chrome LIned RRA barrels:
http://www.ar15.com/forums/topic.html?b=7&f=22&t=143647

 

[DMK]

I don't believe RA makes a chrome lined 20" barrel, just carbines. They have an R4 (16" CAR) barrel that is chrome lined and a chrome lined 16" Midlength that is a little harder to find.

ADCO has 'em:

http://www.adcofirearms.com/rockriver/rrauppers.cfm?page=rra

http://www.adcofirearms.com/rockriver/rockriverbbls.cfm?page=rra

 

[Gary G23]

If RRA would use chrome lined 4150 barrels like Bushmaster I would buy one or two.

 

[TheDutchman]

My Entry Tactical has a Chrome Lined Barrel.

 

[MrAcheson]

Initially they didn't offer them, but they have started within the last year or two. Chances are if it is used, it won't be chrome lined.

 

[DMK]

If RRA would use chrome lined 4150 barrels like Bushmaster I would buy one or two.

If Bushmaster would make a midlength gas system like RRA, I would buy one or two.

Especially on their Dissipators.

 

[Spreadfire Arms]

unless it is a special order they are chrome moly Wilson barrels. they are not chrome lined unless it is requested. then it delays your rifle 8-10 weeks.

if Pete (Legal Transfers) has any they chrome lined bbls they are factory complete weapons not just the RRA barrels laying around. RRA has clamped down on people piecing rifles together and then selling them as factory rifles when in fact they did not leave the factory in that configuration.

for that reason RRA is now laser engraving the upper receivers and even the carry handles.

i don't think Pete would put himself in pickle with RRA and switch out a barrel, even if both are factory. RRA frowns upon that fairly heavily.

 

[TC66]

Guys what is the concern with the Chrome lined barrel? I know it is supposed to last longer but if you look at the high end barrels such as Match and Ultra Match for that matter even the Bushmaster Varminter barrel is not Chrome lined. The chrome lining does not make for a good match barrel. Yes it will shoot good and I am not saying it won't but the best barrels as for accuracy are not chrome lined. If you want proof look at all the barrel manufacturers who do the broach cut and single hook cut rifled barrels. They do not use chrome lining.

http://www.kriegerbarrels.com/

http://www.badgerbarrelsinc.com/barrel specifics.htm?79,9

http://www.hartbarrels.com/

I know go on and flame me now.

 

[Gary G23]

Match barrels that are not chrome lined ARE more accurate BUT they are not as reliable, durable, cleanable, or corrosion resistant. It all depends on what you are going to do with it. Everyones usage is different.

 

[Zak Smith]

Please don't tell my stainless barrels they are unreliable-- they haven't figured it out yet.

 

[Rob96]

I am of the opinion that for a civilian, an unlined barrel is fine. They don't see the harsh abuse a military weapon does. I am very good about weapons cleaning so that is no problem for me. I had an unlined DPMS carbine that was totally reliable and accurate. Will be picking up two DPMS M4'geries this week. Both are unlined, no bother to me. I know, people say Bushy or Colt because they use 4150 steel and it is chrome lined. Yeah, that is great if you are lucky enought to get a full auto variant and will see the harsh jungles of Vietnam. Hell when the M16 was first used in "Nam, it was by Special Forces. They were NOT chrome lined and were totally reliable. But they knew about proper weapons maintenance.

 

[TC66]

Match barrels that are not chrome lined ARE more accurate BUT they are not as reliable, durable, cleanable, or corrosion resistant.

I must disagree on this statement. My SS Ultra Match 24 inch barrel and my 16 inch Match barrel were both broken in properly which pretty much closes the majority of the pores that were left open in the barrel when the rifling was cut so they are extremely easy to clean. Less open pores means not as much copper fouling. The barrel I removed to put the 24 inch barrel on had over 10,000 rounds through it and still shot great and was extremely reliable. 1/2 inch groups at 100 yards.

The chrome lining is put into the barrel to help counter the effects of the hot military rounds that are used and to help counter the effects of the auto or burst modes wear on the barrel. If I was shooting auto or burst mode I might worry about durability a bit more but I am shooting groundhogs at 400 to 500 yards. I need extreme accuracy. And until I am have a license to own a full auto or burst mode rifle my barrels will be just as reliable, durable and cleanable as the chrome lined barrels.

Now for the not as corrosion resistant part my barrels are coated in Norrell Moly Resin. Here are some of the Characteristics of the Norrell Moly Resin.
1. Rust and Corrosion Preventative.
2. Resists Temperatures 800 f+ and -125 f.
3. Thin Flexible film allows reassembly of parts
4. Can be applied to all metals and most plastics.
5. Meets Mil-Specs for 60-day seawater immersion.
6. Meets Mil-Specs for accelerated salt spray tests equivalent to 30 years marine environment.
7. Meets Mil-Specs for immersion in acids, powder solvents, paint removers, bore cleaners, etc.

I think the Corrosion part is covered.

So in my opinion chrome lining is not important for civilian use as it would be for the military. So not as big of a deal as everyone seems to make of it when it comes to rifles the general public would own.

 

[Rob96]

Match barrels that are not chrome lined ARE more accurate BUT they are not as reliable, durable, cleanable, or corrosion resistant. It all depends on what you are going to do with it. Everyones usage is different.

Denny Hansen, from SWAT Magazine had an Olympic Arms rifle with a barrel that was not chrome lined, go a little over 80,000 rounds, before the throat eroded enough to cause reliability problems. That was normal practice and numerous rifle training classes. I don't think that is bad service from an unlined barrel.