POF P415 Gen 4 Lower Receiver .223/5.56 NP3

Description

You’re building a duty-grade rifle for home defense or competition. You’ve selected a high-end upper, a premium trigger, and a reliable stock. The foundation for that build—the part that holds it all together and dictates its core function—is the lower receiver. When it comes to that critical component, the POF Rifles P415 Gen 4 Lower Receiver .223/5.56 NP3 Finish is a purpose-built, ambidextrous foundation designed for hard use and precision assembly. It’s a stripped lower receiver, meaning it’s the serialized firearm component ready for you to install your chosen parts kit, trigger, grip, and stock. Featuring an enhanced ambidextrous control set and a durable NP3 nickel-teflon coating, it provides a robust, corrosion-resistant base for a custom AR-15 build. Available at firearms-missouri.com for Missouri residents and nationwide.

Here’s the thing—a lower receiver isn’t just a housing. It’s the interface between you and the weapon system. The POF P415 Gen 4 is engineered around that principle. Its fully ambidextrous controls include a bolt catch, release, and selector that are mirrored on both sides. This isn’t an add-on; it’s machined into the forging. For left-handed shooters or anyone who trains to manipulate the rifle from unconventional positions, this built-in symmetry is a tangible advantage. The magazine release is also oversized and textured for positive identification and actuation, even with gloves on. At a price of $585.61, you’re investing in a platform that eliminates compromise on control layout.

The NP3 finish is a major differentiator. This electroless nickel coating impregnated with Teflon creates a surface that is exceptionally slick, highly corrosion-resistant, and remarkably durable. It reduces friction on internal surfaces where the trigger and hammer pins ride, which can contribute to a cleaner, crisper trigger feel. More importantly, it protects the 7075-T6 aluminum forging from moisture, sweat, and harsh cleaning chemicals. This receiver is built to endure the elements and rigorous round counts without losing its finish or function. The result is a lower that’s both high-performance and low-maintenance.

Compatibility is key for any build. The P415 Gen 4 lower is designed to work with a wide range of standard AR-15 components. It accepts any mil-spec trigger group, grip, and buffer tube assembly. This mil-spec compatibility means your choices for customization are virtually unlimited. You can pair it with a Geissele SSA-E trigger for a precision build or a reliable BCM upper receiver group for a duty-ready rifle. The fit is engineered to be precise, ensuring a tight, rattle-free marriage with your chosen upper receiver. The integral trigger guard is generously sized for use with winter gloves, a small but critical detail for all-weather readiness.

POF P415 Gen 4 Lower Receiver Specifications

Specification	Detail
Model	P415 Gen 4 Stripped Lower
Caliber	.223 Remington / 5.56x45mm NATO
Material	7075-T6 Aluminum Forging
Finish	NP3 Nickel-Teflon Coating
Controls	Fully Ambidextrous (Selector, Bolt Catch/Release)
Trigger Guard	Enhanced, Integral

Pros: The fully integrated ambidextrous controls are a top-tier feature for tactical flexibility. The NP3 finish offers superior corrosion resistance and a slick, low-friction surface. It’s built from a forged 7075-T6 aluminum blank for strength. The design is broadly compatible with standard AR-15 parts, offering great build versatility. The oversized magazine release is a practical, user-friendly touch.

Cons: The premium features come with a premium cost compared to a basic forged lower. As a stripped receiver, it requires additional parts and assembly to become a functional firearm. The enhanced design, while compatible with mil-spec parts, is specifically tuned for optimal performance with POF’s own complete systems.

This lower receiver is for the shooter who views their rifle as a modular tool. It’s for the builder who refuses to compromise on control layout, especially if ambidexterity is a training priority. It’s ideal for those in humid or coastal environments where corrosion is a real concern, thanks to the NP3 finish. Whether you’re constructing a reliable home defense weapon, a competition rifle where split-second manipulations matter, or a hard-use patrol rifle, the P415 Gen 4 lower provides a faultless foundation. It’s for the individual who understands that the receiver is the heart of the system and is willing to invest in that heart.

Frequently Asked Questions

Q: Is this a complete lower receiver or a stripped lower?

A: This is a stripped lower receiver. It is the serialized firearm component but does not include a parts kit (fire control group, bolt catch, etc.), trigger, grip, or stock. These must be purchased and installed separately to build a complete lower assembly.

Q: What is the benefit of the NP3 finish over standard anodizing?

A: NP3 is an electroless nickel coating infused with Teflon. It is significantly more corrosion-resistant than anodizing, provides a permanently lubricated, slick surface that reduces friction on moving parts, and is far more durable against wear and abrasion. It’s a professional-grade finish for demanding conditions.

Q: Will my existing AR-15 upper receiver fit on this POF lower?

A: In the vast majority of cases, yes. The P415 Gen 4 lower is designed to be compatible with standard mil-spec AR-15 upper receivers. A tight, precise fit is always the goal, and occasional minor fitting can occur with any two components from different manufacturers, but it is generally drop-in ready.

Build your next rifle on a foundation that matches your intent. The POF P415 Gen 4 Lower Receiver is in stock and ready to start your project.