IRREGULAR DEFENSE X NOVESKE CHAINSAW 11.5" UPPER - FDE

The Noveske Chainsaw Irregular Defense 11.5 Upper is a premium complete AR-15 upper receiver assembly built for hard-use reliability, suppressor compatibility and precision performance. Developed in collaboration with Irregular Defense, this upper combines Noveske’s renowned barrel and receiver quality with rugged tactical enhancements and modern suppressor-ready functionality.

At the core is an 11.5-inch 5.56 NATO barrel manufactured from 416R stainless steel with a 1:7 twist rate, hand-polished Noveske Match Chamber and individually serialized QC tracking. The barrel features straight fluting between the chamber and gas block, extended hand-polished feed ramps and a pinned low-profile gas block for maximum durability and consistent performance.

The forged Noveske Chainsaw™ upper receiver is constructed from 7075-T6 aluminum and finished with Type III hardcoat anodizing followed by durable FDE Cerakote® for enhanced longevity and corrosion resistance. Additional premium features include a Noveske FDE Love Handle ambidextrous charging handle, phosphate-coated full-auto compatible bolt carrier group and CGS SCI-SIX flash hider/suppressor mount.

The upper is completed with a 4th Generation NSR-10.75” free-float M-LOK handguard featuring mounting positions every 45 degrees and a full-length Picatinny top rail. The carefully matched handguard and barrel spacing provide ideal suppressor clearance and optimized suppressor integration.

Key Features:

• Complete AR-15 upper receiver assembly
• Collaboration between Noveske and Irregular Defense
• 11.5-inch 5.56 NATO barrel
• 416R stainless steel barrel construction
• 1:7 twist rate optimized for modern projectiles
• Hand-polished Noveske Match Chamber
• Individually serialized barrel for QC traceability
• Mid-length gas system for smooth cycling
• Straight fluted barrel design
• Pinned low-profile Noveske gas block
• Forged 7075-T6 Chainsaw™ upper receiver
• Type III hardcoat anodized and FDE Cerakote® finish
• Noveske FDE Love Handle ambidextrous charging handle
• Full-auto compatible phosphate bolt carrier group
• Carpenter 158 MPI-tested bolt
• CGS SCI-SIX flash hider and suppressor mount
• NSR-10.75” free-float M-LOK handguard
• Full-length Picatinny top rail
• Optimized suppressor clearance design

Specifications:

• Product Name: Noveske Chainsaw Irregular Defense 11.5 Upper
• Manufacturer: Noveske Rifleworks
• Platform Compatibility: AR-15
• Caliber: 5.56 NATO
• Barrel Length: 11.5"
• Barrel Material: 416R Stainless Steel
• Twist Rate: 1:7
• Chamber: Noveske Match Chamber
• Gas System: Mid-Length
• Gas Block: Low Profile, Pinned, .750" Journal
• Barrel Extension: M4 with Extended Feed Ramps
• Muzzle Device: CGS SCI-SIX Flash Hider / Suppressor Mount
• Upper Receiver Material: Forged 7075-T6 Aluminum
• Finish: Type III Hardcoat Anodizing with FDE Cerakote®
• Charging Handle: Noveske FDE Love Handle Ambidextrous
• Bolt Carrier Finish: Phosphate
• Bolt Material: Carpenter 158 Steel
• Bolt Testing: MPI Tested
• Handguard: 4th Generation NSR-10.75” M-LOK Free Float
• Rail Type: Picatinny 1913 Top Rail
• Barrel Nut: Lightweight American-Made Steel