Watchtower Firearms Flat-Faced Comp – 5.56 – Black Nitride – 5.20" OAL (CMB556FB) – UPC 853810006683
Tame recoil, keep sights flat, and add a clean, duty-ready look to your build. The Watchtower Firearms Flat-Faced 5.56 Compensator features a precision-machined, flat-face profile that pairs aggressive gas management with a sleek, minimalist aesthetic. At 5.20" overall length and finished in tough black nitride, Model CMB556FB (UPC 853810006683) is purpose-built for carbine shooters who want repeatable performance, durable protection against the elements, and a front end that looks as good as it shoots.
Why a flat-faced comp? A flat, square muzzle face helps drive gases straight and keep your sight picture stable, aiding faster split times and more confident follow-up shots—especially on lightweight 5.56 rigs.
Key Benefits
Faster follow-ups: Multi-port compensator geometry reduces muzzle rise so you can track the dot/reticle and get back on target quickly.
Recoil moderation: Redirected gas impulse tames perceived recoil for smoother strings and tighter groups in drills.
Flat-faced control: A squared-off front helps keep blast symmetrical for predictable muzzle behavior.
Built for hard use: Black nitride case-hardens the surface for corrosion resistance, abrasion resistance, and easy carbon cleanup.
Precision alignment: Tight-tolerance machining supports concentricity to help protect accuracy and minimize POI shift.
Feature Highlights
Caliber class: 5.56 NATO / .223 Rem
Overall length: 5.20 inches
Material & finish: Steel body with black nitride treatment for durability and low glare
Design focus: Flat-faced compensator / brake hybrid with gas ports engineered to counter climb and manage impulse
Model / SKU: CMB556FB
UPC: 853810006683
Typical 5.56 muzzle threads are 1/2x28, but thread pitch can vary by barrel and manufacturer. Verify the thread spec printed on your barrel and device packaging before installation.
Ideal Use Cases
Carbine classes & competition: Faster transitions and better control when the clock is running.
Defensive & duty builds: Durable finish and predictable behavior under rapid strings.
Range & training rifles: Make high-round-count sessions more comfortable with less muzzle movement.
Pinned & welded projects: Extended length may be suitable for pin-and-weld on certain barrel lengths to reach legal OAL—consult a qualified gunsmith to confirm math and compliance.
Installation (Quick Start)
Verify thread pitch on your barrel and comp (most 5.56 barrels are 1/2x28—confirm).
Degrease all mating threads and the barrel shoulder.
Time the device using supplied shims/crush washer (per kit instructions) so ports index correctly.
Torque to spec and bore-check for clear, concentric alignment before live fire.
For pin & weld, have a qualified gunsmith perform the work and re-verify alignment.
Pro tip: Witness-mark the comp and barrel shoulder after install to spot any rotation during early heat cycles.
Performance You’ll Notice
Flatter tracking: The sight picture stays flatter shot-to-shot, making recoil management more intuitive.
Cleaner edges: Nitride finish sheds carbon more easily, simplifying post-range maintenance.
Consistent POI: Quality machining supports repeatable results when removing/reinstalling accessories.
Compatibility Notes
Caliber: Optimized for 5.56/.223 pressures.
Handguards: Ensure adequate clearance if the device tucks slightly under a rail.
Suppressors: This is a compensator, not a suppressor mount; do not attach a can unless the manufacturer explicitly rates your suppressor for direct-over-comp use (rare).
Thread pitch: Always match device and barrel thread specs; cross-threading risks permanent damage.
Care & Maintenance
After range use: Let cool, then brush carbon with nylon/bronze and a carbon-safe solvent.
Protect the finish: Avoid harsh abrasives; nitride cleans easily with standard gun cleaners.
Periodic inspection: Check timing, torque, and ports for debris; re-torque if any shift is detected.
Safety & Legal
Know the law: Muzzle devices and pin/weld modifications can impact firearm length classification. Follow all federal, state, and local regulations.
Bore alignment: Inspect visually before firing. If you see any eccentricity or contact marks, do not shoot until corrected.
Professional help: If you’re unsure about timing, torque, or compliance, consult a gunsmith.
Specifications (At-a-Glance)
Small cosmetic or dimensional differences can occur by lot. Refer to your specific product label for definitive details and included hardware.
SEO Highlights (Quick Scan)
Watchtower Firearms flat-faced 5.56 compensator
Black nitride finish, 5.20" OAL, recoil & muzzle rise reduction
Precision-machined, easy-to-clean, duty-ready muzzle device
CMB556FB, UPC 853810006683
Suggested Meta Title
Watchtower Firearms Flat-Faced Comp – 5.56, Black Nitride, 5.20" OAL | CMB556FB | UPC 853810006683
Suggested Meta Description
Control recoil and muzzle rise with the Watchtower Firearms Flat-Faced 5.56 Comp. 5.20" OAL, black nitride finish, precision-machined for durability and performance. Model CMB556FB, UPC 853810006683.
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