AR-9 / PCC – Compensator Muzzle Brake – 9mm 1/2x28 – Lithium
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
The Ultradyne USA Lithium PCC Compensator Muzzle Brake is built for 9mm pistol-caliber carbine platforms using 1/2x28 muzzle threads. It uses 416 stainless steel construction, a black nitride finish, and a shrouded timing nut setup so you can properly index the brake without the usual guesswork and frustration.
Fitment
Fits many 9mm AR-9 and PCC platforms with 1/2x28 muzzle threads and at least 0.600 inch of barrel thread length.
Does NOT fit
Does not fit barrels with non-1/2x28 thread pitch, insufficient thread length, or platforms where outside diameter and handguard clearance are too tight. Verify thread pitch, caliber, barrel shoulder, and clearance before purchase.
What it does
This muzzle device is designed to reduce muzzle movement on 9mm PCC platforms while providing a timed installation using the included shrouded timing nut. It gives customers a cleaner install path than crush-washer roulette.
Why it’s worth it
If a customer wants a purpose-built PCC brake instead of tossing random rifle parts on a 9mm build, this one checks the right boxes: proper 9mm sizing, 1/2x28 threading, stainless construction, nitride finish, and included timing hardware.
Specs
• Caliber: 9mm PCC
• Thread pitch: 1/2x28 UNEF-2B
• Minimum barrel thread length: 0.600 in
• Material: 416 stainless steel
• Finish: Salt bath nitride / black nitride
• Mounting: Shrouded timing nut
• Length: 1.75 in
• Outside diameter: 1.124 in
• Brake weight: 3.2 oz
• Total weight with timing nut: 4.0 oz
• Wrench flats: 13/16 in
What’s included
• Lithium PCC compensator muzzle brake
• Shrouded timing nut
Tools needed
Appropriate vise setup, barrel support or upper fixture, and a 13/16 inch wrench or equivalent tool for installation.
Install notes
Proper timing and alignment matter. Confirm thread pitch, thread engagement, and bore clearance before live fire. Function-test the firearm after installation.
Verify before you buy
Verify your platform is a 9mm PCC or AR-9 with 1/2x28 muzzle threads, enough thread length, and sufficient clearance for a 1.124 inch outside diameter muzzle device.
⚠ Trademark & Compatibility Disclaimer
IronKells Armory LLC is not affiliated with, endorsed by, or sponsored by any manufacturer mentioned. All trademarks are the property of their respective owners and are used only to identify compatibility or fitment.
⚠ Install & Compatibility Disclaimer
Installation should be performed by a qualified armorer or gunsmith. Improper installation, modification, or use may affect firearm safety and reliability. Buyer is responsible for verifying compatibility, performing proper function testing, and ensuring safe operation.
