The SOF 86K HUB is a compact titanium suppressor for 8.6 BLK and .338 ARC platforms. It is 3D printed in Ti-6Al-4V (Ti64) titanium, measuring 6.60 inches long with a 1.90-inch diameter and weighing 12.2 ounces. SOF configures it for semi-automatic use on short-barrel PDW and rifle platforms, with a 10-inch minimum barrel length and a 3,000 FPS maximum velocity. The HUB 1.375×24 interface accepts compatible HUB-pattern mounts. It suits a short-barrel rifle in a larger-bore cartridge.

Key Specifications

• The calibers are 8.6 BLK and .338 ARC, a pair of larger-bore cartridges.
• Overall length is 6.60 inches, the figure to add to your barrel length.
• The material is Ti-6Al-4V (Ti64) titanium, 3D printed with metallurgical additive manufacturing.
• The mount is a HUB 1.375×24 interface, compatible with HUB-pattern mounting systems.
• The listed limits are a 10-inch minimum barrel length and a 3,000 FPS maximum velocity, for semi-automatic use.

Frequently Asked Questions

What barrel length does the 86K need? SOF lists a minimum barrel length of 10 inches and a maximum projectile velocity of 3,000 FPS, for semi-automatic use.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the SOF 86K HUB Suppressor, 8.6 BLK and .338 ARC, Titanium

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through SOF’s suppressors lineup and our Lubbock, Texas team will handle the transfer and it ships fast to your Class 3 dealer. For a short-barrel 8.6 BLK or .338 ARC build, the 86K HUB gives a light titanium can on a standard mount.