The JK Armament Pro-Kor 556K 5.56mm suppressor in black is the 5.56 model in JK Armament’s Pro-Kor line (JK Armament part no. JK172PROKOR556K). It is built with stainless steel, the material shooters reach for when a can will see high round counts and heat. That makes it a fit for duty carbines, training rifles and AR builds that get shot hard rather than babied. The black finish blends with a standard AR-15 and keeps the suppressor visually low key. For a 5.56 shooter who values toughness over saving the last ounce, it is a sensible choice.

Key Specifications

• Caliber is 5.56mm, the standard AR-15 chambering.
• Construction is stainless steel, which holds up to heat and high round counts.
• The finish is black, matching most AR-15 rifles.

Frequently Asked Questions

What rifles is the Pro-Kor 556K for? It is a 5.56mm suppressor, made for 5.56 rifles such as AR-15 carbines.

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 JK Armament Pro-Kor 556K 5.56mm Suppressor, Black

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 JK Armament‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.