The CMMG DefCan 9 Bi-Lock QD flash hider in 1/2×36 is the 9mm version for DefCan 9 suppressors, cut with the 1/2×36 thread used on many 9mm barrels. It allows quick, secure attachment or removal of DefCan suppressors. Used on its own, it limits muzzle rise for faster follow-up shots and reduces the loss of night vision in low light. This is the 1/2×36 thread, and CMMG also lists a DefCan 9 flash hider in 1/2×28, so match the thread to your barrel. It suits a 9mm shooter who wants a flash hider now and a DefCan suppressor mount later.

Key Specifications

• The caliber is 9mm, the bore size this DefCan 9 version is made for.
• The thread is 1/2×36, the pitch your 9mm barrel has to be cut to.
• The interface is Bi-Lock QD, which lets a DefCan suppressor attach and detach quickly.
• On its own it works as a flash hider, reducing muzzle rise and the loss of night vision in low light.

Frequently Asked Questions

How is this different from the 1/2×28 DefCan 9 flash hider? The only difference is the barrel thread. This one is 1/2×36, and the 1/2×28 version will not thread onto a 1/2×36 barrel.

Can I use it with a DefCan 3 suppressor? No. DefCan flash hiders are not cross compatible, and this one is the DefCan 9 for 9mm.

Buy the CMMG DefCan 9 Bi-Lock QD Flash Hider, 9mm, 1/2×36

If your 9mm barrel is threaded 1/2×36, this DefCan 9 flash hider is the match. Order from CMMG through our Lubbock, Texas gun shop with more AR muzzle devices for fast, direct shipping.