Description
PRE-SALE GOING ON NOW!!! SHIPPING EARLY JANUARY 2027!!!!!!!
The AR9SD is a true integrally suppressed subgun platform built for quiet, reliable, and compact performance. At just
5 pounds and 22 inches overall with the Maxim Defense SCW collapsible stock (or 23.8" Maxim collapsable stock if FRT is wanted), it delivers staple-gun sound signature
with the duty-ready reliability Hammer Creek is known for.
The patent-pending unitary 10.25" × 1.25" suppressor threads directly onto the upper and serves as the barrel nut,
creating a clean, rigid, and purpose-built system. The barrel is ported and tuned so that standard 115-grain
supersonic ammunition exits at approximately 1,030 fps—subsonic without requiring specialized ammo. The same
tuning reduces gas and bolt velocity, producing an exceptionally soft and clean-shooting experience compared to
conventional blowback PCCs. The AR9SD cycles 115-, 124-, and 147-grain ammunition with equal reliability.
Unlike other “SD” designs, the 1.25-inch suppressor diameter maintains meaningful standoff from the handguard. The
result is a cool enough surface for bare-hand contact during normal use while still accepting standard M-LOK
accessories. Choose the low-profile skinny handguard or the fuller SD-style handguard depending on preference.
Magazine Options
The AR9SD is available on a dedicated 9mm lower that accepts Colt-pattern SMG magazines. These are stainless
steel, double-feed, double-stack magazines purpose-built for submachine guns—fundamentally different from single
feed Glock magazines designed for handguns. For those who prefer the standard Hammer Creek AR-15 lower, the
platform also runs Mean Arms magazines. One 32-round magazine is included (Duramag Colt-pattern or Mean Arms,
where legal).
Standard Features
• Maxim Defense SCW collapsible stock
• ALG ACT trigger
• Patent-pending integral suppressor system
• Tuned ported barrel for subsonic performance with standard 115gr ammo
• Reduced gas and bolt speed for soft, clean cycling