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Questions & Answers
Caliber:
.223 Remington, 5.56x45mm NATO
Barrel Length:
16 in
Gas System Length:
Carbine Length
Barrel Twist Rate:
1-7
Firearms Threads Per Inch:
1/2x28
Muzzle Device:
A2 Flash Hider
Color:
Black
Fabric/Material:
7075 Aluminum
Gun Type:
Rifle
Gun Make:
AR Platform
Magazine Included:
No

Code: 6C5-UFH-QRC216-00-40017-BLK

MPN: 00-40017-BLK

UPC: 604206201324

Product No Longer Available

Product Info for Bushmaster QRC II LTW Upper Assembly

Introducing the Bushmaster QRC II (Quick Response Carbine), the perfect complete upper assembly for anyone looking for reliability, accuracy, and ease of use. Built to the highest standards, this upper assembly is perfect for the range, or at home. The Bushmaster QRC II features a caliber of 5.56 NATO (.223REM) and a carbine-length gas system. The 16 4150 CMV Salt Bath Nitride Pencil Barrel, with a 1:7 Twist Rate, and ? x 28 Thread Pitch, provides both accuracy and power. The QRC II's Salt Bath Nitride MPI Bolt Carrier Group ensures that the upper assembly will fire reliably time after time. The Bushmaster QRC II also features a 7075 Forged A4 Flattop Upper Receiver, allowing for the integration of any optic you prefer. Originally designed for use of only a red dot optic, the QRC II improves upon the PROVEN, lightweight and reliable design of the original QRC with more modern solutions that allow for full customization of your rifle. The Bushmaster 14 Free Float Rail ensures you can add your favorite accessories. The Bushmaster QRC II is the perfect choice for anyone looking for a reliable, accurate, and lightweight upper assembly. Whether you're at the range or in the field, the QRC II is sure to impress. So why wait? Get yours today and experience the Bushmaster difference!image

Features of Bushmaster QRC II LTW Upper Assembly

  • Upper Receiver Material
  • 7075 Aluminum Alloy Upper Receiver
  • A4 Flat Top Bolt Carrier Group Finish
  • Salt Bath Nitride Bolt
  • MPI Tested Handguard
  • BFI 14 M-LOK Handguard Muzzle Device
  • A2 Flash Hider Front Sight
  • None Rear Sight

Package Contents:

  • Bushmaster QRC II LTW Upper Assembly

Ammunition

155 / 55
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Firearm Case

130 / 30
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Ammo Boxes

114 / 14
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Bushmaster QRC II LTW Upper Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • Bushmaster QRC II LTW Upper Assembly, 16in, 5.56 NATO/.223 Remington, Black, 00-40017-BLK , MPN: 00-40017-BLK , UPC: 604206201324 , Code: 6C5-UFH-QRC216-00-40017-BLK
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Last updated 2026-09-15 UTC.