Description
Patriot Ordnance Factory built the P415 Gen 4 stripped lower for folks who want their ambidextrous controls handled from the factory instead of tracking down aftermarket parts and fitting them one by one. It comes machined from 7075 billet aluminum, which gives you a stiff, strong receiver with the crisp lines and clean flats that billet fans appreciate. The proprietary ambi controls are already installed, so all you need to finish it out is a standard mil-spec lower parts kit.
What Sets the P415 Gen 4 Lower Apart
The headline here is truly two-sided operation. The bolt catch, bolt release, and magazine release are all ambidextrous, meaning a left-handed builder gets the same natural reach and control as a righty without any workarounds. POF also added an enhanced bolt catch and an oversized integrated trigger guard with grip relief, which gives you room to work with gloves on and a more comfortable hand position up against the grip. It's the kind of thoughtful layout that makes itself known the first time you run the gun.
Build Quality on the Billet P415 Lower
Beyond the controls, POF worked in a flared, oversized mag well that makes reloads faster and less fussy, plus nylon tension screws that snug up the fit between your upper and lower to take out any wobble. The receiver wears a black hardcoat anodized finish that stands up to years of range time and hard use. At right around 10 ounces, it keeps things light without giving up strength.
Getting Your P415 Gen 4 Receiver Running
Since this is a stripped receiver, you'll supply your own lower parts kit, trigger, buffer components, and stock or brace to complete the build. It accepts standard mil-spec AR components, so parts sourcing is straightforward. Whether you're putting together a precision rig, a competition setup, or a do-everything carbine, this lower gives you a proven foundation with ergonomics that punch well above the average AR receiver.
Key Specifications
- Manufacturer: Patriot Ordnance Factory (POF-USA)
- Model: P415 Gen 4
- Manufacturer Part Number: 00626
- UPC: 847313006264
- Type: Stripped Lower Receiver
- Material: 7075 Billet Aluminum
- Finish: Black Hardcoat Anodized
- Caliber: Multi-Caliber
- Controls: Fully Ambidextrous (Bolt Catch, Bolt Release, Mag Release)
- Trigger Guard: Oversized Integrated with Grip Relief
- Mag Well: Oversized Flare
- Tension Screws: Nylon Receiver Tension Screws
- Weight: 10 oz
- Compatibility: Standard Mil-Spec Lower Parts Kit
What’s Included
- POF P415 Gen 4 stripped lower receiver with factory-installed ambidextrous controls
- Nylon receiver tension screws
Frequently Asked Questions
What do I need to complete the P415 Gen 4 stripped lower?
You'll need a standard mil-spec AR lower parts kit, which covers the trigger, hammer, safety, pins, and springs, along with a pistol grip, buffer assembly, and a stock or brace. The ambidextrous bolt catch, bolt release, and magazine release come already installed from POF, so those are handled. From there it's a straightforward build with common mil-spec components.
Are the controls on this POF lower actually ambidextrous?
Yes. The bolt catch, bolt release, and magazine release are all fully ambidextrous right out of the box. That means left-handed builders get the same easy access to every control as right-handed ones, with no aftermarket parts or gunsmithing needed.
Is the P415 lower billet or forged?
It's machined from 7075 billet aluminum, which gives it that clean, distinctive billet profile along with excellent strength and rigidity. The oversized integrated trigger guard and flared mag well are cut right into the receiver rather than added on. It wears a durable black hardcoat anodized finish built for the long haul.
Will standard AR-15 uppers work with this receiver?
The P415 Gen 4 lower is designed around the standard AR platform and accepts mil-spec lower parts. The nylon tension screws let you snug up the fit between the upper and lower to remove play for a tighter feel. For the best results, pair it with a quality upper and confirm your build components are mil-spec.





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