KACQDC Open Brake (3/4x24)
Muzzle Device · attaches to 3/4x24 · presents KAC QDC · fits 6 suppressors in the catalog
length
2.31″
weight
3.3 oz
thread
3/4x24
+1 more thread pitch
standard
KAC QDC
MSRP
$374
A barrel adapter screws onto your rifle's threaded muzzle and stays there. It gives the muzzle a mounting interface, so the suppressor attaches to the adapter instead of the bare barrel threads. One adapter per rifle lets you move one suppressor between them. Many are quick-detach designs, and some also work as a muzzle brake or flash hider.
This one fits barrels threaded 3/4x24 and presents the KAC QDC interface. A suppressor with a matching KAC QDC mount attaches to it. It comes in 2 thread pitches, so pick the one that matches your barrel.
How mounting systems work →- Type
- Muzzle Device
- Overall length
- 2.31″
- Weight
- 3.3 oz
- Attaches to
- 3/4x24
- Presents
- KAC QDC
- MSRP
- $374
Not published by the manufacturer: material.
Prices are manufacturer's suggested retail (MSRP). What you pay may differ.
6 suppressors in the catalog take this part, all of them from KAC. That is a single-manufacturer interface, so your options are limited to that line.
- KAC 5.56 MCQ-1
- KAC 5.56 QDC
- KAC 5.56 QDC/CRS-PRT
- …and 3 more.
Which ones fit your barrel and host?
See all 6 in the Builder- 3/4x24
- 5/8x24
KAC sells this part in 2 thread pitches. They are one product on this page; pick the pitch that matches your barrel in the Builder.
- Designed to be the primary mounting host for KAC 7.62mm QDC suppressors, the 7.62mm QDC Open Brake also reduces wear to the first baffle, extending service life.
- Available in both KAC 3/4-24 thread and standard 5/8-24 muzzle threads.