Allen Engineering AEM4-65 6.5mm Suppressor

Allen Engineering AEM4-65 6.5mm Suppressor

Designed to do more than “just open the bore,” the AEM4-65 Suppressor is a purpose-built evolution of the original AEM4—tailored to meet the demands of today’s precision shooters using 6mm ARC, 6.5 Grendel, and 6.5 Creedmoor rifles. Featuring the proven AE/OPS INC baffle design and optimized with the same internal treatments as .30 caliber cans, the AEM4-65 extends service life while maximizing suppression performance across a broad caliber range.

At the heart of its innovation lies a carefully enlarged bore profile, giving ample clearance for long, high-BC bullets that experience yaw at the muzzle. The compact B-length mount makes this suppressor ideal for short-dwell barrels, delivering a reliable suppressor interface on modern gas systems without compromising fit or repeatability. Whether you're building out a competition rifle or dialing in a do-it-all tactical setup, the AEM4-65 offers rigid alignment, smooth operation, and the consistency trusted by precision marksmen.

Caliber-Tuned Design
Purpose-built for 6mm ARC, 6.5 Grendel, and 6.5 Creedmoor with optimized bore size for longer bullets

Classic Baffle Geometry
Retains AE/OPS INC baffle system for proven performance and tone reduction

B-Length Mount
Compact mounting footprint compatible with short-dwell barrels; ideal for 16" rifle gas setups

High Repeatability
Collar-based alignment system ensures consistent point-of-impact even after removal and reattachment

Multi-Caliber Compatibility
Handles both 6mm and 6.5mm rounds with ideal clearance and performance balance

Optimized for Yaw Effects
Bore profile mitigates contact risks from long bullets exiting the muzzle

Brake-Mounted Precision
Mounts via muzzle device and collar, with 7–10 thread turns recommended for secure fit

Specifications

• Caliber Compatibility: 6mm ARC, 6mm MAX, 6.5 Grendel, 6.5 Creedmoor
• Overall Length: 8.4"
• Weight: 20 oz
• Recommended Barrel Clearance: 2.2"
• Mount Type: Brake-Mounted + Collar System
• Mounting Length: 2.05" (B-length standard from collar taper to muzzle end)
• Thread Engagement: 7–10 full turns recommended for secure fit
• Attachment Method: Suppressor collar slides over barrel; aligns via dedicated muzzle brake
• Repeatability: High point-of-impact consistency upon reattachment
• Baffle Design: Classic AE/OPS INC geometry