Kel-Tec P11043 Magazine Extension +1 Round 40 S&W P-11 Black

The Kel-Tec P11043 Magazine Extension transforms standard 15-round P-11 magazines into 16-round capacity units without compromising reliability or concealability. This polymer extension seamlessly integrates with existing .40 S&W magazines, providing that crucial extra round when it matters most.

What Makes This Different

Unlike aftermarket extensions that can affect feeding reliability, the P11043 maintains the original magazine's spring tension and follower geometry. The precision-molded polymer construction matches Kel-Tec's factory specifications, ensuring consistent lockup and release. Factory testing validates reliable function through thousands of cycles, while the low-profile design adds minimal bulk to the pistol's grip.

Key Features

• Increases magazine capacity from 15 to 16 rounds of .40 S&W
• Durable black polymer construction resists impact and chemical exposure
• Factory-engineered dimensions ensure proper magazine catch engagement
• Maintains original spring compression ratios for reliable feeding
• Simple installation requires no gunsmithing or permanent modifications
• Compatible exclusively with Kel-Tec P-11 15-round magazines
• Textured grip surface provides secure handling during reloads

Field performance demonstrates consistent feeding across various .40 S&W loads, from 165-grain to 180-grain projectiles. The extension proves particularly valuable for competitive shooters seeking maximum capacity within division rules, while law enforcement officers appreciate the additional round without significant concealment compromise. Weather resistance testing confirms function in temperatures from -20°F to 140°F, with no degradation in harsh conditions.

Technical Specs

• Material: High-impact polymer construction
• Finish: Matte black polymer
• Capacity increase: +1 round (15 to 16 total)
• Caliber compatibility: .40 S&W only
• Magazine compatibility: Kel-Tec P-11 15-round magazines
• Installation: Tool-free attachment system
• Weight: Approximately 0.3 ounces
• Country of origin: United States

This extension represents the most reliable method to increase P-11 magazine capacity while maintaining factory-level dependability. The precision engineering eliminates common aftermarket issues like feeding failures or magazine drop problems that plague generic extensions.