22lr AR conversion question

sewktbk

sewktbk

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This will probably sound utterly stupid to a lot of you. But i don't know the answer and i never will unless i ask.

Simple question : i see that 22lr AR conversion kits don't include a barrel. Doesn't the barrel need to be changed? whats the deal with that?

thanks
 
What he said.

But there is a difference. The centre fire barrel is .223 (bullets .224), the .22LR has smaller bullets so you don't get as good rifling engagement, and the chamber of the conversion is smooth bore until the bullet engages the rifling in the barrel.

Its decent for 50 yard shooting practice. For high accuracy you might be better off with a .22LR upper, but I don't own one so I can't say how good they are.
 
I got a question regarding these...I see the average bolt slap in kit costs about $200, a full upper from chiappa is about $400.

Some people/internets are saying that the cheaper bolt only kits are bad for a regular ar barrel and will cause heavy leading and damage your regular AR barrel.

Is there truth to this or is it just marketing? If I wanted to slap a .22 kit on an AR that cost a few K, I wouldn't be skimping on 200$ at this point.

BUT, lots of people run JUST the bolt kits, and say they never had a problem.

Whats the bottom line?
 
I find the old m16a1 upper (colt sp1) with the 20" 1/12 twist barrel my .22 kit works very well

my 14.5 " barrel is not as accurate with.22

now yes it will lead up the barrel some ive shot several K thru mine no dammage to the gun

what I do is after a few hundred .22 i open it up remove kit and check chamber and barrel if clear i install the .223 bolt and fire a few .223 it blows the crap outta the gun

i do clean it properly at home
 
The advantage of the 22 kits are retaining the same upper for familiarities sake, where your optics/rails setup remains identical. POA/POI will be different but that is to be expected, this is strictly meant to be run under 50m.

A new upper is better suited if you just want to dedicate it to a .22 platform, but not many people are willing to invest a 2nd set of optics just for that, plus the Chiappa uppers are made from plastic.

That said, accuracy, reliability and fouling is an issue with a kit in a standard upper. I vote for a conversion kit for training purposes, but for fun plinking, a dedicated upper is a better deal.
 
twyeh said:
That said, accuracy, reliability and fouling is an issue with a kit in a standard upper. I vote for a conversion kit for training purposes, but for fun plinking, a dedicated upper is a better deal.
Click to expand...

I have the Spike's Tactical Kit (in stainless) and if it is properly oiled will run without a single jam for at least 300-500 rounds. When it starts to jam I will give it a quick wipe, oil it up again and it will run for another 300-500 rounds

A friend of mine had the CMMG kit (blued) and had a lot of issues with it. He bought the same kit in stainless and it runs flawlessly.

Our kits are probably more reliable that our 10-22s with butler creek mags.

Inside 50 yards the POI is similar enough to .223.
 
I have a CMMG kit running in a Norc M4. It has run well over 1000 rounds through with only a handful of jams of any sort. Now that I have sorted out the ammo it likes, it will go 500+ rounds without cleaning or malfunctioning. I also finish a session by running a couple of mags of .223 through to blow the gas tube clear.

The rifle has not been cleaned in the last 1000 rounds of rimfire (and approximately 100 rounds of .223) and shows no leading or fouling in the barrel at all. The only cleaning the CMMG insert has received was a quick wipedown with a rag and then a bit of fresh grease dabbed on at around 600 rounds fired.

As a cheap plinking/practice kit it is a great deal and well worth the money spent.

Mark
 
I agree with a lot of the posts here(re: bolt carrier group kits).
I'm using the CMMG stainless BCG with Black Dog 25rnd mags. It's been a great kit and allows my son to shoot the AR (cheaply!) Can't comment on the accurracy 'cause that's not the main purpose of the kit as it's used only out to 50yrds. If I was looking for accurracy...I have other non-restricted "options".
After a few hundred rounds, the .223/556 BCG gets swapped in and a few mags are fired to "clear" out the lead/residue build up that normal cleaning may have missed.
I've had no problems following this method and the kit runs great using the cheap Win555 ammo.
 
MauserMike said:
But there is a difference. The centre fire barrel is .223 (bullets .224), the .22LR has smaller bullets so you don't get as good rifling engagement, and the chamber of the conversion is smooth bore until the bullet engages the rifling in the barrel.
.
Click to expand...


Also... the twist rate in a center fire AR barrel is wrong for .22lr
Most AR's have barrels with 1:8, 1:9
Optimal twist for a .22lr is 1:16


MauserMike said:
Its decent for 50 yard shooting practice. For high accuracy you might be better off with a .22LR upper, but I don't own one so I can't say how good they are.
Click to expand...

A dedicated .22 upper... Is as accurate as any decent .22lr semi.
At least that's what I've found with the Tac-Sol.
 
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