SIONICS 11.5″ Complete Premium Upper Receiver Group – 5.56

Original price was: $829.95.Current price is: $789.95.

Out of stock

Get notified when this product is back in stock


Product Description

SIONICS 11.5″ Upper Receiver Group Premium Edition is precision machined from 7075-T6 aluminum to maximize strength and reduce weight. The premium series features the tightest machining tolerances and most lustrous midnight type III class II hard coat anodize. Tighter tolerances allow for a tighter barrel fit which improves accuracy and finish. All of SIONICS premium receivers are THERMAL FIT to the barrel, this furthers the accuracy of the upper receiver group greatly. These uppers come with the SIONICS logo hard engraved above the charging handle and on the opposite side of the ejection port.

11.5″ Upper Receiver Group Premium Edition features a 10.8″ SIONICS M-LOK Rail with 5-Slot Rail Piece, 11.5″ SIONICS Premium Barrel, a phosphate BCG, and Radian Raptor Charging Handle.


  • Configuration: AR15 Style Upper Receiver Group, 5.56mm NATO
  • Upper Receiver: 7075-T6 Aluminum – Premium – M4
  • Barrel: 11.5” Medium Weight Chrome Lined, 41V50, NATO Chamber, 1:7, Chrome Lined, Air-Gauged, Radiograph, and MP Inspected
  • Gas System: Carbine-Length, Direct-Impingement
  • Muzzle Device: A2 Flash Suppressor
  • Bolt Carrier: 8620 M16 Carrier – Phosphate
  • Bolt: Sprinco 5-Coil Heavy Extractor Spring – Phosphate
  • Charging Handle: Raptor Ambidextrous
  • Hand Guard: 10.8″ SIONICS – M-LOK with 5-Slot Rail Piece
  • Sights: No Sights included




Technical Information

Barrel Twist



5.56 NATO / .223 Remington

Color / Pattern

Firearm Compatibility




7075 Aluminum



Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit