Suppressor

NFA Regulations

Suppressors are regulated under the National Firearms Act (NFA). Purchasing requires:

• ATF Form 4 submission through a dealer
• $200 tax stamp
• Background check and approval (typically 6-12 months)
• Registration to you as an individual or to a trust

Check your state and local laws—some states prohibit suppressor ownership.

Mount Systems

Quick-Detach (QD) Mounts: Most popular option. Suppressor attaches to a compatible muzzle device (flash hider, brake, or mount).

• Dead Air KeyMo/Xeno: Very popular, secure lockup
• SilencerCo ASR: Widely available, good compatibility
• SureFire SOCOM: Premium, fast-attach system
• Griffin Taper: Simple, lightweight system
• YHM Phantom: Budget-friendly option

Direct Thread: Suppressor threads directly onto barrel threads (typically 1/2x28 for 5.56). Lighter and more concentric but slower to attach/remove.

Key Specifications

Caliber Rating: The maximum caliber the suppressor is rated for. A .30 cal suppressor can be used on 5.56, 300 BLK, and .308. Using a suppressor on a larger caliber than rated causes baffle strikes and damage.

Length and Diameter: Affects overall rifle length and handguard clearance. Use first-class components.length_min/length_max and components.outer_diameter for filtering and compatibility checks. Shorter suppressors are more maneuverable but less effective.

Weight: Adds to muzzle weight, affecting balance and handling. Ranges from 10 oz to 20+ oz.

dB Reduction: How much the suppressor reduces sound. 25-35 dB is typical. Remember: 3 dB = 2x perceived loudness.

Full-Auto Rating: Indicates the suppressor can handle sustained full-auto fire without damage. Even for semi-auto, this suggests robust construction.

Selection Considerations

Dedicated vs. Multi-Caliber: A dedicated 5.56 suppressor will be lighter and potentially quieter than a .30 cal can on a 5.56 host. But a .30 cal can works across more rifles.

Mount System: Choose based on what muzzle devices you want to run, and consider if you'll share the suppressor across multiple hosts.

Barrel Length: Some suppressors have minimum barrel length requirements to avoid baffle strikes from unburnt powder.

Tuning Your Rifle: Suppressed rifles run with more back pressure. Consider:

• Heavier buffer (H2 or H3)
• Adjustable gas block
• Enhanced buffer spring

Plan for longer cleaning intervals and potentially more gas to the face.