[clin4580]

If you was to buy a 20"upper for long distance shooting what would you buy?Colt,Bushmaster,Rock River Arms?

[clin4580]

I forgot to mention that it will be going on a Bushy lower, Will any of the above mention work with it?

[Kamicosmos]

Since you already have a bushy lower, makes sense to go with a bushy upper. Depending on what you want out of the upper, you could get a normal 20" upper like an A2 or A3, the V-Match Upper, or go all out and get the Varminter upper.

[SteelyDan]

Not an expert, but my understanding is that Colt uppers have some non-milspec parts that aren't readily interchangeable, the Rock River lowers are better than their uppers, and you really can't go wrong with Bushys. The Bushy A3 is a great platform for any kind of long-range shooting.

[Rob96]

DPMS makes some very good, high quality uppers.

[Steve Smith]

What kind of "long distance" shooting? Formal competition or plinking? Some competitions require you have have a certain type of upper (not brand, but configuration) and this should be paramount in your decision making process.

I won't name any brands right now because your requirements are not clear enough.

[Kharn]

Olympic Arms's Ultra Match was well-regarded for its accuracy, last I heard.

Kharn

[ARperson]

I'd go with a Bushy upper in the A3 configuration (most adaptable). However, I've had good results with J&T Distributing too. Just got a new upper from them. Mates with no problem to my Bushy lower too. I will say that upon reassembly after cleaning, I noticed that the parts aren't quite as "perfect" as Bushmaster (firing pin retaining pin holes didn't line up exactly or the pin itself was not straight, had to use a pair of needlenose pliers to guide it in from the bottom of the bolt area. Could be a fluke, could be indicative of overall quality.) But it shot well out of the box and that's what counts to me.

Regardless of you purpose or needs, I think you'd find everything you need from Bushmaster. Unless you're going for super-duper accurate at much longer distances than normal range plinking.

[4v50 Gary]

I'm under the impression that the Colt upper is pretty standard and the non ml spec parts are the bolt carrier & lower receiver (pin holes larger in diameter than mil-spec and there's a pinned block that prevents introduction of the burst control mechanism).

If you're a purist, you would buy a built Bushy upper or the parts from Bushy to build an upper. If you don't care (like me), you Frankengun it. Since you're talking long distance, are you're talking Space Gun or something the AMTU would use??

For the former, you may want the DPMS extruded aluminum upper without forward assist. It's heavier and takes the heavier barrel with a mite less stress. Go for a Krieger or Obermeyer barrel chambered to your reloading specs. Free float the handguard. For the latter, it's got to look M-16A2 so you build around it. Stainless custom barrel (Krieger or Obermeyer), adjustable trigger, free floating black pastic handguards. National match front sight (just another way of saying narrower front sight blade) and NM rear sights.

[BryanP]

As long as the parts match up it shouldn't matter. I just finished building my Franken-Lower (Century Arms receiver which I bought on a whim as it was a really good deal, DPMS buttstock kit & lower parts kit). I'm going to get a 20" A2 upper but I haven't decided between the a DPMS from CMMGINC or a J&T from someone I know here in Middle TN.

But if I had a Bushmaster lower yeah, I'd probably get a Bushy upper just so it all matches up nicely.

[355sigfan]

Uppers and lowers are compatable. Some may require and adapter to go from say a Large hole lower to a small hole upper. Colts are more mil spec than any other brand. The only companies that make Mil Spec guns are Colt and FN and you can't buy FN's. If you think your Bushy, DPMS or what ever is milspec, call the factory and ask for the milspec number. They will not have one trust me. Bushy guns are ok. Colts have been more accurate in my experience. The Oly I owned was pure garbage. I can't recomend one.
Pat

[ARperson]

Uppers and lowers are compatable. Some may require and adapter to go from say a Large hole lower to a small hole upper. Colts are more mil spec than any other brand. The only companies that make Mil Spec guns are Colt and FN and you can't buy FN's. If you think your Bushy, DPMS or what ever is milspec, call the factory and ask for the milspec number. They will not have one trust me. Bushy guns are ok. Colts have been more accurate in my experience. The Oly I owned was pure garbage. I can't recomend one.

How is something more milspec than others. It's like pregnant, it either is or it isn't. There's no such thing as more pregnant and less pregnant. :D

I disagree that Colts are more accurate. My Bushy is more accurate than my Colt. That being said, I've found that firearms are generally more accurate than the shooters on the trigger and thus their accuracy is a relative thing. And the Colt is less appealing to deal with because take down is hindered by the screw pins instead of push pins holding the upper and lower together. A small point but a big difference when you're still unscrewing and your spouse has got the other complete disassembled. :mad:

[355sigfan]

I've found that firearms are generally more accurate than the shooters on the trigger and thus their accuracy is a relative thing.
END

Well no matter how good or how poor the shooter. He or she will be more accurate with a more accurate rifle. Colts Civilian guns don't have chrome lined barrels and non chrome barrels are more accurate. Chrome is preferred on a working gun and non chrome is better for match guns. The take down screw is easily replaced with a standard push out pin you just need the right tool. Get yourself and armorers kit or have a gunsmith install one. I admit the take down screw is a pain. Your right its mil spec or its not and Bushmaster and all non colt non FN guns are not Mil Spec.

Pat