Blackout Defense Complete Dual Taper Lock .300 AAC Forward Assist Upper Receiver Group

Blackout Defense complete dual taper lock upper receiver group for AR-15 in .300 AAC Blackout. Features the Dual Taper Lock (DTL) system for precise self-centering barrel alignment and a monolithic-like upper/handguard assembly. Upper Receiver is machined from Aerospace Grade Aluminum with enhanced walls for rigidity, including two anti-rotation holes and a dust cover that integrates into the upper. Handguard provides seven sides of M-LOK mounting slots with a full-length Picatinny top rail. Barrel is cryogenically treated 416-R stainless steel with 5R rifling, designed for improved straightness and heat management. Barrel extension is optimized for .300 AAC Blackout, and the assembly supports a compatible M-LOK mounting platform with a dust-cover hinge pin locked by the barrel nut. Bolt Carrier Group is 8620 steel with a MPI, shot-peened bolt made from 9310 or Carpenter 158. Charging Handle is ambidextrous Stryker. Do note, this is a complete upper receiver group (forward assist) and is compatible with AR-15 platform.