A1 QD Flash hider

Silent Steel A1 Boltlok (QDB) Flash hider is a suppressor mounting muzzle device. Boltlok muzzle devices are combatible with Silent Steel QD and QDB suppressor.

The model is A1 type flash hider. No indexing needed.

Technical Specifications:

Lenght: 62mm
Diameter: 22mm
Weight: 120g
Material: 25CrMo4
Surface treatment: Nitriding

Threads / models:

A1 Boltlok flash hiders are offered for both 5.56 and 7.62 calibers. While our current selection of thread options is limited, we are actively updating our inventory to expand availability.

The following threads are currently in stock:

1/2″x28 UNEF (5.56)
M13x1LH (5.56)
M14x1 LH (5.56)
5/8″x24 UNEF (7.62)
M18x1,5 (7.62)

More info:

Silent Steel Boltlok (QDB) muzzle devices are compatible with both Silent Steel Boltlok (QDB) and QD suppressors. When using QD suppressors, an o-ring is required for secure locking. However, the o-ring should not be used with Boltlok suppressors.

Taper at the front of the thread ensures solid lock up and minimal/repeatable POI shift and it also effectively blocks fouling from entering the mounting surfaces.

How to buy our products

Silent Steel products are available through retailers.

Distributors