The Maxim Defense MD11 is a 7.62x51mm NATO / .308 Winchester semi-automatic rifle with an 18-inch barrel, 20-round capacity, and a Flat Dark Earth finish. The receiver is machined from billet 7075 aluminum and it weighs 9 lbs. 
 

Key Specifications 

• Model: MD11 
• Caliber: 7.62x51 mm NATO / .308 Winchester 
• Barrel Length: 18 inches 
• Capacity: 20 rounds 
• Finish Color: Flat Dark Earth 
• Condition: New in Box 
• Weight: 9 lbs. 
• Frame Material: Billet 7075 Aluminum 
• Receiver Material: Billet 7075 Aluminum 
• Type: Modern Sporting Rifle 
   

Detailed Features 

The billet 7075 aluminum receivers are machined to tighter tolerances than cast receivers. 7075 is a higher-strength alloy than the 6061 aluminum used in most production AR-10-pattern lowers. 
 
The M-Lok handguard accepts accessories without requiring rail sections. The fully-floated barrel is free of contact with the handguard, which eliminates pressure points that can affect barrel harmonics and shift point of impact. 
 
The Geissele SSA-E trigger is a two-stage design with a known break weight and short reset. It is a factory-installed aftermarket-quality trigger that most AR-10 builds do not include at this price point. 
 
Ambidextrous controls cover the charging handle, selector switch, and magazine release, which suit both left- and right-handed operation without modification. 
 

Target Audience 

Competition shooters in .308/7.62 NATO formats, hunters pursuing medium to large game at extended ranges, and shooters who want a factory-built .308 with higher-spec components than typical production rifles. 
 

Usage Scenarios 

1. Competitive Shooting: Geissele SSA-E trigger and floated barrel support the accuracy demands of precision rifle competition. 
2. Hunting: .308 Winchester is a capable cartridge for deer, elk, and hog hunting at ranges where the 18-inch barrel provides adequate velocity. 
3. Home Defense: Semi-auto .308 with 20-round capacity is effective but heavy; this is a secondary use case rather than the primary design application.

The Maxim Defense MD11 .308 FDE gets solid reviews from owners who are specifically interested in the billet construction and the Geissele SSA-E trigger as factory-installed components.

Build quality is consistently praised. The billet 7075 aluminum receivers are recognized by knowledgeable buyers as a premium-tier choice over cast alternatives, and the fit and finish are described as uniform and tight. The FDE coating is well-applied per owner feedback.

Accuracy is rated well, with the Geissele SSA-E trigger and the fully floated barrel receiving specific credit. Owners who have shot .308 rifles at precision distances report the MD11 competes with rifles at higher price points.

Ergonomics get positive marks. The ambidextrous controls are noted as a meaningful feature for left-handed shooters, and the M-Lok handguard provides a clean profile for accessory mounting.

Weight at 9 lbs is the most-discussed practical concern. For competition use or bench shooting it is manageable, but for all-day hunting carry it is a real consideration. Owners who bought it primarily for competition seem unbothered; hunters who carry all day are more likely to note it.

Price is debated. Some owners consider the MD11 priced appropriately for its billet construction, Geissele trigger, and .308 platform. Others compare it to JP Enterprises, LWRC, and other premium AR-10-pattern manufacturers and find the positioning competitive rather than a clear winner.

Customer service experiences with Maxim Defense vary in reported responsiveness, which is worth tracking through current forums before purchase.