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, 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
- Bolt Carrier: NP3 Coated, includes properly staked OCKS (Optimized Carrier Key Screws)
- Bolt: Sprinco 5-Coil Heavy Extractor Spring – NP3 Coated
- Charging Handle: Raptor Ambidextrous
- Hand Guard: 10.8″ SIONICS – M-LOK with 5-Slot Rail Piece
- Sights: No Sights included