Ronin Competition 20-inch 22ARC Freefloat M-Lok Handguard Rifle Complete Upper Build

Ronin Competition 20-Inch .22 ARC Free-Float M-LOK Handguard Rifle Complete Upper

The Ronin Competition Complete Upper is built around a 20-inch .22 ARC Bear Creek Arsenal HBAR barrel with a rifle-length gas system, a Black Diamond Series slick-side billet upper receiver, a 15-inch free-float M-LOK handguard, and a complete 6.5 Grendel II bolt carrier group and charging handle.

Key Features

• 20-inch Bear Creek Arsenal HBAR barrel, 1:7 twist, Black Nitride finish
• Rifle-length gas system
• Black Diamond Series slick-side billet upper receiver, made in the USA
• 15-inch free-float M-LOK handguard with partial Picatinny top rail section
• A2 GI Birdcage flash hider on 1/2x28 threads with 1/2-inch black crush washer
• Complete AR-15 6.5 Grendel II bolt carrier group, QPQ Nitride finish, and mil-spec quality M4 charging handle included

Barrel and Gas System

The 20-inch Bear Creek Arsenal barrel is built in an HBAR heavy profile with a Black Nitride finish and a 1:7 twist rate suited to .22 ARC. It runs a rifle-length gas system through a stainless steel gas tube and a micro low-profile steel gas block with a .750-inch diameter, matched to the barrel's .750-inch gas block journal. At the muzzle, 1/2x28 threads carry the included A2 GI Birdcage flash hider, secured with the supplied 1/2-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is a slick-side billet unit from the Black Diamond Series, made in the USA, and it includes the ejection port door, rod, and spring. This upper is in a slick-side configuration, meaning the forward assist is not included. It's paired with a 15-inch free-float M-LOK handguard featuring a partial Picatinny top rail section, finished in black.

Bolt Carrier Group and Charging Handle

A complete AR-15 6.5 Grendel II bolt carrier group is included, finished in QPQ Nitride and built on the 6.5 Grendel bolt pattern that .22 ARC is based around, along with a mil-spec quality AR-15 M4 charging handle.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.