Fierce Firearms 7mm 20" Fits AR-15 2841820

Fierce Firearms 7mm, 20" — AR-15 Compatible Barrel | Part # 2841820 | UPC 853418284803 Turn your AR-15 into a flat-shooting, wild-country performer. The Fierce Firearms 7mm, 20" AR-15 barrel (2841820) brings long, sleek 7mm bullet performance to the lightweight, modular AR platform. Designed for precision, reliability, and easy integration, this 20-inch tube balances velocity and handling to keep your carbine lively on the move while delivering the downrange consistency you expect from Fierce. Whether you’re building a backcountry predator rifle, a steel-range trainer, or an all-season varmint rig, this 7mm AR barrel helps you shoot flatter, farther, and with confidence. Part / SKU: 2841820 UPC: 853418284803 Platform: AR-15 (standard AR-15 upper receiver interface) Caliber: 7mm (.284") — verify specific chambering before purchase Barrel Length: 20 inches Why Choose a 7mm AR-15 Barrel from Fierce Firearms 7mm ballistics in a compact platform: Take advantage of high-BC 7mm projectiles for flatter trajectories and better wind performance than typical small-cal AR loads. 20" “do-everything” length: Optimized to add meaningful velocity over shorter carbines while keeping overall weight and balance field-friendly. Precision machining: Concentric chambering and a true crown support repeatable POI and tight groups with quality ammunition. AR-15 compatibility: Built for standard AR-15 receivers and accessories to keep your parts ecosystem simple and configurable. Hunt- and range-ready durability: Premium barrel steel and protective finishing (varies by lot) help resist corrosion, heat, and hard use. Key Features at a Glance Caliber Bore: 7mm (.284") — chamber spec varies by SKU; confirm exact chamber (e.g., 7mm AR-compatible / wildcat) before ordering ammo Length: 20" for balanced velocity/handling Muzzle: Threaded for brakes/suppressors (where legal). *Common thread for 7mm is 5/8x24 — verify exact pitch for this barrel. Gas System: AR-15 pattern (mid-length or rifle-length; verify for your build) Extension: AR-15 barrel extension (M4 feed ramps typical; verify) Material/Finish: Precision rifle-grade steel with protective finish (nitrided/Cerakoted or stainless depending on run; verify current spec) Twist Rate: Optimized for long-for-caliber 7mm bullets (commonly fast-twist; confirm exact twist) Fit & Build Notes: Before ordering, confirm your chambering, gas system length, muzzle thread, twist rate, and magazine compatibility. Some 7mm AR cartridges require specific magazines and bolts. Real-World Performance Benefits Wind-savvy impacts: Pair long, high-BC 7mm bullets with a 20" tube to maintain energy and stability farther downrange. Smooth cycling: Proper gas tuning and quality machining promote reliable feed, fire, extract, eject—critical for field use. Confident zero retention: A true crown and precise bore geometry support predictable cold-bore and follow-up shots. Ideal Use Cases Predator & varmint hunting: Flat trajectories and light recoil for ethical shots at varied ranges. Practical steel & training: Learn wind and holds on a budget-friendly, AR-based system. Backcountry carry: Keep weight manageable while gaining ballistic reach compared to common small-cal AR loads. Smart Setup Recommendations Bolt & mags: Use the correct bolt face and magazines for your specific 7mm chambering (e.g., Grendel-pattern mags if applicable). Gas tuning: Start with the recommended buffer/spring for your gas length. An adjustable gas block helps tune recoil and reliability, especially with suppressors. Muzzle device: Install a brake for recoil control during load development or a suppressor (where legal) for reduced blast; use proper shims and torque. Optic: A lightweight 2-10x or 3-15x with a usable reticle and zero stop complements the barrel’s reach. Installation (Quick Guide) Unload & clear your firearm. Secure the upper receiver in a proper vise block; remove existing barrel if present. Seat barrel into the receiver with the correct barrel nut; torque to spec and verify alignment. Install gas system: Gas block and tube matched to the barrel’s gas length; confirm port alignment. Time muzzle device: Verify thread pitch, use shims as needed, and torque per manufacturer specs. Function test: Check headspace with proper gauges, then verify lock-back and ejection pattern at the range. If you’re unfamiliar with AR barrel installs, consult a qualified armorer or gunsmith. Care & Maintenance Break-in: Follow Fierce or your gunsmith’s preferred break-in routine for match barrels. Cleaning: Use caliber-correct jags/patches and a quality bore guide; avoid aggressive abrasives. Thread care: Keep muzzle threads clean; use anti-seize on devices as recommended. Logbook: Track round count, loads, and cold-bore POI for seasonal consistency. Specifications (Quick Reference) Brand: Fierce Firearms Product: 7mm AR-15 Compatible Barrel Length: 20" Platform: AR-15 Part #: 2841820 UPC: 853418284803 Muzzle Threads / Gas System / Twist: Verify for this SKU Finish: Protective finish (varies by lot) Frequently Asked Questions Q: What specific 7mm chamber is this? A: Verify the exact chambering for part 2841820 (e.g., a 7mm AR-compatible/wildcat). Chamber specs determine bolt face, mags, and ammo. Q: What’s the thread pitch? A: 7mm/.30-cal AR barrels often use 5/8x24, but you should confirm the pitch for this barrel before purchasing brakes or suppressor mounts. Q: Which twist rate does it use? A: Fast twists are common for long 7mm bullets; confirm the exact twist to match your preferred bullet weights. Q: What gas system length will I need? A: Many 20" AR barrels run rifle- or mid-length gas. Verify the gas length and pair with the correct gas tube and buffer system. Q: Will it work with standard AR-15 uppers? A: Yes—this is built for AR-15 receivers. Ensure your bolt, mags, and gas/buffer are correct for the specific 7mm cartridge. SEO-Friendly Highlights (Naturally Woven) Fierce Firearms 7mm AR-15 barrel, 20-inch precision barrel, AR-15 compatible 7mm build, threaded muzzle for brake/suppressor, high-BC 7mm performance, long-range AR barrel upgrade, part 2841820, UPC 853418284803, verify chamber, gas system, thread pitch, and twist rate. Meta for Your Product Page Meta Title: Fierce Firearms 7mm, 20" AR-15 Barrel — Threaded | Part 2841820 Meta Description: Build a flat-shooting AR with the Fierce Firearms 7mm, 20" barrel. AR-15 compatible, threaded muzzle, precision-machined for consistent accuracy. Part 2841820 — UPC 853418284803. Verify chamber, gas length, thread pitch, and twist. From the bench to the backcountry, the Fierce Firearms 7mm, 20" AR-15 barrel gives your rifle ballistic reach, reliable cycling, and true-to-zero consistency—in a package that handles like a carbine and hits like it’s bigger than it looks. The End