**04/10/22 This current batch of Sionics URG’s include the NP3 BCG, Radian Raptor CH, and MBUS Pro sights.**
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 our 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, an NP3 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 *(The Silencer Dedicated (SD) uppers do NOT include a muzzle device since that will depend on your silencer)
Bolt Carrier: 8620 M16 Carrier – NP3 Coated with properly staked OCKS (Optimized Carrier Key Screws)
Bolt: Carpenter No.158, HP/MPI Tested, Black Insert and Sprinco 5-Coil Heavy Extractor Spring – NP3 Coated
Charging Handle: Radian Raptor Ambidextrous
Hand Guard: 10.8″ SIONICS – M-LOK with 5-Slot Rail Piece
Sights: **MBUS Pro**