The Strike Industries King Comp – Black Steel, 5/8"-24 TPI, 2.62" OAL, 0.87" Diameter for .308 Win / 7.62x51mm NATO AR-Platform (KINGCOMP30, UPC: 708747544640) is a hard-hitting hybrid muzzle device built to tame the recoil and muzzle rise of .30-cal ARs. Designed for AR-10 / LR-308 and other 7.62x51mm rifles with standard 5/8"-24 threads, the King Comp helps your rifle shoot flatter, recover faster, and stay on target during rapid strings of fire, training sessions, and competition stages.
If you’re stepping up from a basic flash hider and want a true performance-focused compensator / brake combo for your .308, the Strike Industries King Comp KINGCOMP30 is built for exactly that.
Key Specs – Strike Industries King Comp .308 (KINGCOMP30)
Caliber: .308 Winchester / 7.62x51mm NATO
Platform: AR-10 / LR-308 / 7.62x51mm AR-platform & other 7.62 rifles with 5/8"-24 threads
Thread Pitch: 5/8"-24 TPI
Overall Length (OAL): 2.62"
Outside Diameter: 0.87"
Material: Steel
Finish: Black, corrosion-resistant finish
Model / Part Number: KINGCOMP30
UPC: 708747544640
This model is the .30-caliber version of the popular King Comp, purpose-built for rifles chambered in .308 Win, 7.62x51, and other compatible .30-cal AR platforms using 5/8"-24 threading.
Hybrid Compensator & Muzzle Brake for Heavy-Hitting .308s
The Strike Industries King Comp is a true hybrid design, combining both muzzle brake and compensator features to control the sharper recoil impulse of .30-caliber rifles:
Large side ports vent gas laterally to reduce rearward recoil, helping keep the stock from pounding your shoulder on every shot.
Angled port geometry is tuned to fight muzzle rise, keeping your sights flatter and closer to the target between shots.
The end result is a .308 rifle that feels softer, smoother, and more controllable, especially during rapid or repeated fire.
Whether you’re ringing steel at distance, working drills, or running a battle rifle build, the King Comp can make your .308 feel noticeably more manageable.
Optimized for .308 Win / 7.62x51mm NATO AR-Platform Rifles
This KINGCOMP30 variant is specifically built around .30-cal / 7.62x51mm NATO gas volume and barrel standards:
Uses 5/8"-24 TPI threads, the standard for most .308 AR and 7.62 NATO barrels.
Designed for AR-10 / LR-308 pattern rifles and other 7.62 AR-platform builds.
Ideal for rifles chambered in .308 Win, 7.62x51mm NATO, and other compatible .30-cal AR cartridges using 5/8"-24 threads (verify compatibility for non-standard calibers).
If your rifle is a .308/7.62 AR with 5/8"-24 threads, the King Comp is a direct, drop-in upgrade over factory muzzle devices.
Compact 2.62" Length – Balanced and Handy
At 2.62 inches in overall length with a 0.87" outside diameter, the King Comp provides serious performance without turning your barrel into a front-heavy club:
Compact enough to maintain excellent rifle balance on 16" and 18"+ barrels.
Works well with most free-float handguards and rail designs without excessive overhang.
Keeps your .308 build maneuverable in tight spaces, vehicles, and around barricades.
It’s long enough to give gas room to work, but short and slim enough to keep your rifle responsive and fast-handling.
Aggressive Porting for Real-World Recoil Management
The King Comp’s distinctive, aggressive profile isn’t just for looks—it’s all about directing gases to your advantage:
Multiple large side ports are engineered to vent gases outward, reducing the straight-back impulse that .308s are known for.
Port orientation helps counteract muzzle climb, so your sight picture returns to target quicker after each shot.
The face and port geometry also help disrupt blast in a way that makes the rifle feel more controllable and predictable.
On the firing line, you’ll feel the difference in how your .308 settles shot-to-shot compared to a simple birdcage flash hider.
Built Tough – Steel Construction with Black Protective Finish
The .308 King Comp has to withstand higher pressures, more blast, and more heat than its 5.56 counterpart—so Strike Industries builds it strong:
All-steel construction stands up to sustained fire, heat cycles, and rough use.
Durable black finish helps resist corrosion, carbon fouling, and surface wear while matching most AR receivers and accessories.
Engineered for high-round-count training, duty use, and serious range days.
If you run your .308 hard in classes or competition, you want a muzzle device that can take abuse; King Comp is built for that.
A Performance Upgrade Over the Standard A2 Birdcage
The classic A2 flash hider does a decent job with flash, but it’s not optimized for recoil control—especially on a .308. Upgrading to the King Comp KINGCOMP30 gives you:
Significantly better recoil reduction, which matters even more on 7.62 rifles.
Noticeable reduction in muzzle climb, helping you stay on target for follow-up shots.
A more refined, custom look that visually sets your rifle apart from factory builds.
For shooters who value control and speed on a .308 AR, the King Comp is a logical and impactful upgrade.
Simple Installation on 5/8"-24 .30-Cal Barrels
Installing the Strike Industries King Comp is straightforward for anyone familiar with AR muzzle devices:
Ensure the rifle is unloaded and safe.
Remove the existing muzzle device and any old crush washer or shims.
Install a new crush washer or shim set as specified by Strike Industries (typically not included; follow their instructions).
Thread the KINGCOMP30 onto the 5/8"-24 barrel and torque to the recommended spec.
Time the device so the side ports are properly aligned and the device is securely indexed.
Inspect the bore to ensure proper clearance and concentricity before shooting.
If you’re not comfortable installing muzzle devices, have a qualified armorer or gunsmith handle the installation.
Ideal For Competition, Training, and Defensive .308 Builds
The Strike Industries King Comp .308 is an excellent choice for:
Competition AR-10 / .308 rifles, where fast splits and sight recovery are critical.
Training carbines and DMR-style builds, used in classes and high-volume range sessions.
Home-defense or duty .308 rifles, where more controllable recoil means better shot placement under stress.
Enthusiasts who want their 7.62 rifles to shoot flatter and feel less punishing during extended use.
Paired with proper shooting technique, the King Comp helps you get more performance and comfort out of your .308 platform.
Technical Summary – Strike Industries King Comp KINGCOMP30
Product Name: Strike Industries King Comp (King Compensator)
Caliber: .308 Win / 7.62x51mm NATO (and other compatible .30-cal AR cartridges, 5/8"-24 threaded)
Thread Pitch: 5/8"-24 TPI
Overall Length: 2.62"
Outside Diameter: 0.87"
Material: Steel
Finish: Black, corrosion-resistant
Platform Compatibility: AR-10 / LR-308 and other 7.62x51mm AR-platform rifles with 5/8"-24 threaded barrels
Model / Part Number: KINGCOMP30
UPC: 708747544640
For AR-10 and .308 AR shooters who want a rugged, high-performance muzzle device that helps manage recoil, reduce muzzle rise, and give their rifle a bold, functional look, the Strike Industries King Comp Black Steel 5/8"-24 .308 (KINGCOMP30) is a powerful upgrade over standard factory hardware.
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