Centurion Arms CM4 Integrally Suppressor Ready .300 Blackout Pistol 8.5" Barrel - 30 Rd

Centurion Arms CM4 Integrally Suppressor Ready .300 Blackout Pistol 8.5" Barrel - 30 Rd

Centurion Arms Complete 8.5" 300BLK Pistol is a dedicated suppressor-optimized platform engineered for shooters who demand maximum efficiency, reliability, and control in a compact defensive setup. Built around a purpose-driven 8.5" cold hammer forged barrel and paired with premium components throughout, this system is designed specifically for suppressed .300 Blackout performance—where consistency and gas management matter most.

From its pinned low-profile gas block to its rifle-length carbon fiber PRI handguard, every element of this upper is selected to enhance stability, reduce weight, and improve handling under real-world conditions. Combined with a hard-use Centurion Arms lower receiver setup and premium bolt carrier system, this configuration delivers a refined shooting experience built for serious applications.

Suppressor-Optimized Design
Purpose-built specifically for suppressed .300 Blackout use, delivering efficient gas management and consistent cycling.

8.5" Cold Hammer Forged Barrel
Chrome-lined, match-profile barrel ensures durability, accuracy, and long service life under hard use.

Tight Gas System Tuning
Precision .095 gas port and pistol-length gas system support reliable suppressed operation.

Pinned Low-Profile Gas Block
Permanently secured for maximum reliability and resistance to movement under heat and recoil.

PRI Gen III Carbon Fiber Handguard
Rifle-length free-float design reduces weight while improving heat resistance and stability.

Hard Chrome Sandcutter BCG
Enhanced bolt carrier group with chrome E4 tapered bolt for improved reliability and reduced fouling.

PRI Gasbuster Charging Handle
Designed to reduce gas blowback when shooting suppressed, improving shooter comfort.

Matched Receiver System
CM4 mil-spec forged upper and C4 forged lower provide a strong, reliable foundation.

Enhanced Buffer System Setup
Includes H2 buffer and carbine spring for optimized cycling balance.

Lightweight Ergonomic Configuration
SBA3 brace and carbon fiber rail keep the platform compact and maneuverable.

Durable 7075-T6 Construction
Aircraft-grade aluminum receivers with Type III hardcoat anodizing for long-term strength.

Specifications

• Caliber: .300 AAC Blackout
• Barrel Length: 8.5 inches
• Barrel Type: Cold Hammer Forged, Chrome Lined
• Twist Rate: 1:5
• Gas System: Pistol Length
• Gas Port Size: .095
• Gas Block: Low Profile, Pinned to Barrel
• Upper Receiver: Centurion Arms CM4 Forged, 7075-T6 Aluminum, M4 Extended Feed Ramps
• Lower Receiver: Centurion Arms C4 Forged, 7075-T6 Aircraft Grade Aluminum
• Handguard: PRI Gen III Rifle Length Round Carbon Fiber Free Float
• Bolt Carrier Group: Hard Chrome Sandcutter BCG with Chrome E4 Tapered Bolt
• Charging Handle: PRI Gasbuster Charging Handle
• Buffer System: H2 Buffer with Standard Carbine Spring
• Buffer Tube: 9-Position Carbine Tube, 7075-T6 Aluminum, Type III Hard Anodized, Everlube Coated
• Brace: SB Tactical SBA3 Pistol Brace (Black)
• Grip: A2 Style Grip
• Receiver Material: 7075-T6 Forged Aluminum