Description

Upgrade your next AR-15 build with the CMMG Resolute MK4 5.56 Barreled Upper Receiver, designed for precision and durability. Featuring a 16.1″ Chrome Moly barrel with a medium contour and a 1:7 twist rate, this upper receiver delivers superior accuracy and handling. The 1/2×28 threaded muzzle is equipped with the CMMG ZEROED muzzle brake, helping reduce recoil and improving follow-up shots.
The barrel, made from 4140 chrome moly steel, is coated with a salt bath nitride finish for corrosion resistance and longevity. The mid-length gas system ensures smoother operation and recoil management, making it a reliable choice for any shooting scenario.
The upper is machined from billet 6061-T6 aluminum with a durable black Cerakote finish, paired with the CMMG EML15 M-LOK handguard for added customization options. With a total weight of just 3.6 lbs and an overall length of 25 inches, this upper receiver provides excellent balance and maneuverability.
Features:
MK4 platform
5.56 NATO
Direct impingement
16.1″ barrel length, MT contour
1:7 barrel twist
4140 CM barrel material, salt bath nitride finish
CMMG ZEROED muzzle brake
1/2×28 muzzle thread
Mid-Length gas system
Billet 6061-T6 aluminum upper receiver
CMMG EML15 M-LOK handguard
Black Cerakote finish
Weight: 3.6 lbs
Overall length: 25″

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Compare prices for 810103473461 - CMMG Resolute Mk4 Upper Receiver 223/5.56 55BB40BAB from all vendors

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$411.35
Ships Fast, most items ship for $9.99-19.99, No CC or Firearm Fees
$411.36
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$426.40
$24.99
$441.98
20.00
$442.42
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$445.96
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$447.24
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$448.99
$14.99
$449.06
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$452.33
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$453.18
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$453.70
$11.95 Shipping
$457.99
19.95
$458.45
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$461.42
Free shipping over $400 (Excludes Ammo)
$461.99
14.84
$462.00
19.95
$465.07
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$467.19
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$467.19
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$467.38
9.95
$468.00
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$471.99
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$473.78
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$475.69
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19.95
$477.99
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$479.99
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$494.38
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$499.49
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$500.15
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12.00
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$518.99
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$530.90
19.99
$530.95
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$29.99 Handguns, $39.99 Long guns, $19.99 Ammunition, $19.99 Suppressor, $12.95 Everything else
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$561.89
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$583.99
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$588.54
35.00
$588.99
Firearms & Suppressors $19.99 | Accessories $14.95 - $19.99
$595.38
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$630.71
10.00
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$403.20
$14.95
$479.93
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$573.99
8.95
$798.79
45.00

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