KAK Retro Extended Flash Hider, 4in, 1/2×28

The KAK Retro Extended Flash Hider, 4in, 1/2×28 (brand part no. AR15-XM177-FH-001) is a muzzle device chambered for .223 Rem/5.56 NATO and styled after the classic XM-177 moderator. KAK Industry designed this extended flash hider so that, when pinned and welded to a 12.5-inch barrel, the combined assembly reaches a legal, non-NFA overall barrel length. That pin-and-weld approach is a common, legal way to run a visually compact short barrel while keeping the assembled barrel length at or above the 16-inch federal minimum for a rifle, avoiding SBR registration. The flash hider itself is an ordinary Title I muzzle device; it is the means of legally reaching rifle-length barrel, not a regulated part on its own.

Key Specifications

• Threaded 1/2×28, chambered for .223 Rem/5.56 NATO.
• Styled after the classic XM-177 moderator for a retro appearance.
• Sized to bring a 12.5-inch barrel to a legal, non-NFA length when pinned and welded.

Frequently Asked Questions

Is this flash hider itself an NFA item? No, it is an ordinary muzzle device; pinning and welding it to a 12.5-inch barrel is a legal way to reach rifle-length overall barrel measurement without SBR registration.

What barrel length is this designed to extend? A 12.5-inch barrel, bringing the combined assembly to a legal, non-NFA overall length when pinned and welded.

Buy the KAK Retro Extended Flash Hider, 4in

Get the compact XM-177 look on a legally configured rifle-length barrel. Browse Schaefer Defense’s AR muzzle devices selection and order from our Lubbock, Texas gun shop — we’ll get it out to you as soon as it’s ready to ship.