Matching upper and lower receivers.

[Great-Kazoo]

Thanks for your insight. Yep, no doubt sloppy loose is normal. And yes, I agree what happens under the upper receiver has very little to do with the accuracy of a chambered round. So yes, I have shot many milspec AR's. So now I will ask you a question. Have you ever held or shot a "accurized" AR? There is no slop or looseness. How long will it stay that way? I have no idea, but it is great while it last.

Regarding accuwedge and "O" rings or shims, I agree, these are bandaids not fixes.


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The real question is... What's your level of expectation accuracy wise out to 1 - 2 - 400 + if that yards? What are you wanting to acheive with your AR, distance, urban build ? You can buy and off the shelf AR, or assemble one from a parts kit, and hit steel @ 1 - 200 yds. even more depending on eye sight and optic.

[porterdavid98]

The real question is... What's your level of expectation accuracy wise out to 1 - 2 - 400 + if that yards? What are you wanting to acheive with your AR, distance, urban build ? You can buy and off the shelf AR, or assemble one from a parts kit, and hit steel @ 1 - 200 yds. even more depending on eye sight and optic.

You reduced the discussion to the simple heart of the matter. Almost anyone with any reasonable skills should be able group well and hit targets out to 200 yards. When I started this post I figured somebody would make a statement regarding getting another rifle altogether, like a lock bolt with no slop anywhere. That would have missed my point. I love building (assembling) AR and AK style rifles. However, maybe it is my OCD talking, I have trouble accepting sloppy loose as not fixable. Thanks for your observations.


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[Hoser]

Almost anyone with any reasonable skills should be able group well and hit targets out to 200 yards.

Define well and how big of a target...

[porterdavid98]

Define well and how big of a target...

Oh, trying to trap me are you? Actually by most "sniper" standards the AR is not the most accurate of rifles. But, the military thinks hitting 6 inch steel plates at 300 yards is average at best. No bench rest, just sitting, prone, or standing holding a 7 pound gun with iron sights.

My initial post regarding looseness between the upper and lower receiver was not meant to be about marksmanship.


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[ChunkyMonkey]

Oh, trying to trap me are you? Actually by most "sniper" standards the AR is not the most accurate of rifles. But, the military thinks hitting 6 inch steel plates at 300 yards is average at best. No bench rest, just sitting, prone, or standing holding a 7 pound gun with iron sights.

My initial post regarding looseness between the upper and lower receiver was not meant to be about marksmanship.


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You are talking to the master of 3" gong there... Although I have not been to his matches. I have seen videos of the matches he hosted. Impressive group of shooters. One of these days, I ll get my fat butt down there w/ Islandermyke.

[Hoser]

Oh, trying to trap me are you?

Just wondering. Dome dudes think minute of car door is accurate enough.

[spqrzilla]

Just wondering. Dome dudes think minute of car door is accurate enough.

That's no way to talk about Sean's junk gun.

[sealer]

Not intending to hijack the post but I've done two builds so I'm a newby.

Both run Spikes lowers and BCM uppers. Tight as a virgin and easily better than the stock RRA and Colt I have. And the Colt has the "pretty" Accuwedge in it. But Colt is Colt...not a bad thing but...

One wears an EoTech and the other wears a Vortex 1x6 with LaRue QDs.

Triggers are where my concerns lay. I'd be more concerned about that but you guys are more experienced than I am.

Drew - Out

[Delfuego]

Just wondering. Some dudes think minute of car door is accurate enough.

All my rifles are BSB accurate all day long, if I do my part...

I have a Seekins factory rifle that has almost no slop and has been a hammer with factory ammo out to 850y. There are also custom builders and NM builder (Compass Lake) that build very tight, very accurate rifles.

You can spend the dough and get exactly what you desire, but is the juice worth the squeeze?