$1,600.00
New Knight’s Armament SR-15 CQB 11.5″ Mod 2 M-LOK Upper Receiver Group – E3.2 Bolt
- Phone Number: Click to view
- Condition: New
- Listing Type: Individual
- City: West Valley City
- State: Utah
- Zip/Postal Code: 84119
- Local County (e.g., Summit County): UT
- Make/Brand: Knights
- Model: SR-15 CQB 11.5″ Mod 2 M-LOK Upper Receiver Group
- Caliber: .556
- Terms: Must agree to terms
- Listed: October 16, 2026 10:11 am
- Expires: 57 days, 9 hours

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Description
Selling a new (unfired) Knight’s Armament SR-15 CQB 11.5″ Mod 2 M-LOK Upper Receiver Group – E3.2 Bolt w/HuxWrx Flash Hider. I do not have the original KAC 3 prong flash hider but plenty can be found online.
Nothing wrong with the upper, no blemishes, condition is NEW. Selling because I have other projects that I am moving to.
Firm on price, sorry no trade offers, will not respond to any trade offers.
Interested please text
Available to meet only in West Valley, West Jordan, Taylorsville, Murray area.
Mon – Frid, any time before 3 pm.
Knight’s Armament SR-15 CQB 11.5″ Mod 2 M-LOK Upper Receiver Group – E3.2 Bolt
KAC PN 31963
The SR-15 E3 MOD 2 series’ 5.56mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry standard. The 5.56mm HuxWrx Flash Hider interferes with propellant gas combustion forward of the muzzle to significantly reduce flash signature, will not ring upon firing or when struck, and is compatible with the Knight’s line of 5.56mm QDC Signature Reduction Devices.
Ships complete with bolt carrier group, charging handle, front and rear Micro BUIS (PN 25654 and 25660), HH buffer (PN 21057) and 5-Slot M-LOK Rail (PN 31912).
Specifications
Barrel: 11.5” (29 cm) 1:7 Twist, Hammer Forged, Chrome Lined
Caliber: 5.56mm NATO
Weight: 3.8lbs (1.7kg)
Length: 20.5” (52cm) OAL
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