Magazine Base Pad Extension for FNX 45
Video review
Expert review
About this product
What is the Magazine Base Pad Extension for FNX 45? It's a precision-machined aluminum extension that increases magazine capacity by 2.5 rounds while maintaining full slide-lock functionality. Developed specifically for FNX 45 pistols, this 6061-T6 aluminum component adds strategic clearance for defensive and competition applications where reload speed matters.
What is the Magazine Base Pad Extension for FNX 45 used for?
This extension provides 2.5 additional rounds while maintaining slide-lock functionality – a critical feature during tactical reloads. The 0.3-inch increased length creates space for two extra .45 ACP rounds plus spring compression clearance. This allows operators to seat a fully loaded magazine with the slide forward, eliminating the need to slingshot or manipulate the slide during administrative reloads.
How does the Magazine Base Pad Extension compare to the Taran Tactical FNX base pad?
The Break Point Armory extension provides superior slide-lock reliability with its extra-power spring, while Taran Tactical's polymer version weighs 0.8 ounces lighter. Our aluminum construction withstands repeated concrete impact during training evolutions, maintaining dimensional stability across 500+ drop tests. The Taran alternative offers faster magazine stripping but compromises on long-term impact resistance.
What does it weigh and what are the dimensions?
The extension adds 1.4 ounces to magazine weight and extends overall length by 0.75 inches. Machined from 6061-T6 aluminum with 0.120-inch wall thickness, it maintains magazine profile while increasing capacity from 15 rounds to 17+1 operational loadout. The Type III hardcoat anodizing provides 500V hardness rating for abrasion resistance.
Who is this NOT for?
This product isn't suitable for concealment carry due to the 0.75-inch length increase printing through clothing. Competition shooters in divisions with strict capacity limits (like USPSA Limited-10) should consider our 1911 Ejector Pin Fixture for maintenance instead. The extension also violates magazine restrictions in California, Oregon, Rhode Island, and Washington.
What's in the box?
Each kit contains one machined base pad, one extra-power magazine spring, and one stainless steel set screw. The package weighs 3.2 ounces total and requires no additional tools for installation beyond a 1/16-inch hex key. Spring tension is calibrated to 12.5 pounds for reliable last-round lockback across 10,000+ cycles.
Is the Magazine Base Pad Extension worth it at $50?
At $50, the extension delivers measurable performance gains for serious FNX 45 users who prioritize reliability over minimal weight savings. Compared to the CZ P-10 Action Enhancement Kit at similar pricing, this addresses capacity rather than trigger performance. For operators needing both increased ammunition and faster reloads, the 2.5-round advantage justifies the investment across defensive scenarios.
Specs at a glance
Pros & cons
What works
- Adds 2.5 rounds while maintaining slide-lock functionality – critical for tactical reloads
- 6061-T6 aluminum construction withstands concrete impacts that crack polymer alternatives
- Extra-power spring provides 12.5-pound tension for reliable lockback across 10,000+ cycles
- Type III hardcoat anodizing achieves 500V hardness for abrasion resistance
Trade-offs
- Adds 1.4 ounces per magazine – noticeable weight increase during extended carry
- 0.75-inch length extension prints through clothing for concealment applications
- Requires periodic set screw torque check (12-15 in/lbs) after 500+ rounds
Key attributes
| Caliber | .45 ACP |
| Capacity Increase | 2.5 rounds |
| Material | 6061-T6 aluminum |
| Weight Added | 1.4 oz |
| Length Added | 0.75 in |
| Finish | Type III Hardcoat Anodized |
| Spring Type | Extra-power magazine spring |
| Compatibility | FNX 45 models |
Frequently asked questions
- Is it compatible with FNX 45 Tactical models?
- Yes, it fits all FNX 45 variants including Tactical models with threaded barrels. Testing confirms proper clearance with factory-threaded barrels and common suppressor-height sights. Installation requires 90 seconds per magazine with standard tools.
- Does it work with aftermarket magazine wells?
- Compatibility varies – it clears most flared magazine wells with 1.5-inch opening diameter. For tight-fitting competition wells like the Springer Precision model, minor filing may be required. Contact support with your specific well model for clearance verification.
- How long does shipping take?
- Orders ship within 24 hours via USPS Priority Mail (2-3 business days) or UPS Ground (3-5 business days). International shipments to eligible countries require 7-10 business days with proper export documentation.
- Can I return it if it doesn't fit my magazine?
- Returns are accepted within 30 days if the product is unused and packaging is intact. Customer pays return shipping unless the error was ours. Confirm your magazine generation – this only fits modern FNX 45 magazines with polymer base pads.