A question we hear weekly at Ridgeline Arms: “Should I buy an optics-ready gun and add a dot, or buy one with the optic already installed?” The answer has changed over the past two years as factory optics packages have gotten dramatically better.
The Case for Factory-Mounted Optics
Fit and Zero
When a manufacturer mounts an optic at the factory, they control the entire system — slide cut, screw depth, thread engagement, and alignment. The result is typically a tighter fit with less potential for loosening under recoil. Factory-mounted pistols often arrive close to zero, needing only minor adjustments.
Lower Mounting Height
This is the biggest advantage, and it’s most visible in the HK VP9CC. HK’s proprietary U-channel mount positions the Vortex Defender CCW 40% lower in the slide than any aftermarket adapter plate. Lower optic = lower bore axis = less muzzle rise = faster follow-up shots. This isn’t achievable with a standard optics-ready slide and an adapter plate.
Warranty Coverage
A factory optics package is covered under the manufacturer’s warranty as a complete system. If you install your own optic and something goes wrong with the mounting interface, you may have to argue with two warranty departments instead of one.
The Case for Aftermarket
Choice
Factory packages give you one optic option (sometimes two). Aftermarket lets you pick exactly the dot, size, and feature set you want. If you specifically want a Trijicon RMRcc or a Holosun 507K, a factory VP9CC package with the Vortex Defender doesn’t help you.
Cost
An optics-ready P365 ($500) plus a Holosun 407K ($200) costs less than a factory-equipped VP9CC ($1,399). The mounting won’t be as elegant, but it works.
Replaceability
Optics break. Batteries die at inconvenient times. With an aftermarket setup on a standard footprint, swapping optics takes five minutes and a Torx wrench. Proprietary factory mounts may limit your future options.
The Verdict
For concealed carry specifically, factory optics packages have pulled ahead. The lower mount, guaranteed fit, and out-of-box readiness matter more when the gun lives in a holster against your body. The VP9CC’s approach — integrated deep mount with a carry-specific closed-emitter optic — is the best implementation we’ve seen. Our VP9CC review covers the optic system in more detail.
For range guns or competition, aftermarket still wins on choice and flexibility. Pick based on the gun’s job.