Description

Everything you need to convert your existing upper to a dedicated .22LR. Just purchase a magazine and you are ready to go.

Comes with CMMG stainless .22LR bolt group & CMMG 4.5" .22LR barrel.

Length: 4.5"
1:16" Twist
Chamber: 22 Long Rifle
Profile: Medium Taper
Muzzle Thread: 1/2"-28 TPI
Gas Port Location: none
SKU#: 22D5B6E

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Compare prices for 815835016948 - CMMG Barrel and Bolt Group Kit 4.5inch MT 4140CM 22LR CA22D5B6E from all vendors

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$230.23
$19.99
$231.75
8.95
$238.99
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$238.99
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$238.99
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$240.33
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$248.19
8.95
$248.99
$14.99
$250.00
14.95
$251.22
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$251.56
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$252.16
8.95
$254.99
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19.99
$256.56
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8.95
$257.89
20.00
$259.99
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$262.37
$10.95 flat rate
$263.63
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$264.25
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$265.99
39.99
$266.99
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$268.61
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$273.69
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$279.99
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$286.99
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19.99
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$292.02
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$298.99
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$299.48
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$301.99
$39.99
$301.99
$29.99 Handguns / $19.99 Long Guns
$301.99
Free shipping on Handguns, Long guns $19.99, Ammo $16.99, Accessories $11.99
$302.76
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$379.24
35.00
$429.97
$10 Flat for Firearms
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$235.62
$14.95
$238.99
Handguns $25 / Rifles $34.99
$273.99
8.95
$275.99
$10.95 Handguns / $29.95 Long Guns
$299.95
Calculated in Cart
$319.99
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Comments (9)

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Is this the same conversion kit other sellers like Brownell's was selling for $159 with 2 or 3 mags. a few months back?

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This is not a conversion. It's a dedicated bolt and barrel designed for use in a 22 LR upper build. The conversion kit from Brownell's you reference is designed to work in any AR-15 chambered in 223 or 556.

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Puzzled... For $299 I can buy a fantastic dedicated AR 22lr rifle in a Smith & Wesson 15-22 and learn all ergos and manual of arms needed. I want to operate my AR under real conditions otherwise. At this price from CMMG what economic benefits are there?

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This 4.5” kit is for a pistol or SBR upper. Also, I’ve read of improved accuracy from CMMG 22 barrels compared to the M&P.

Another thing to note (though irrelevant to a 4.5” barrel) is that Project Appleseed prohibits the M&P 22 rifle. I don’t think there’s anything actually wrong with the rifle but once an organization decides something is “dangerous...”

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Do you use a 3 inch handguard with this?

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I have a 6" hand guard on mine that has a wide enough diameter for my suppressor to fit. When not using my suppressor, I use a flash can that I can easily hand tighten and loosen.

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I have this bolt and barrel in a 22 upper I put together. It'll shoot 2 inches at 50 yards with a sightmark red dot from a rest. Sometimes I run it suppressed CCI standard velocity and it's really quiet. It's one of my favorite range toys.

1 vote
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Wtf 4.5" seriously? I guess if you threw a can on it it would be quiet af. Bullets would barley make sub sonic. I'd just buy a bb gun

0 votes
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I mean supersonic I know I'm a dumbass.

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