Description

P80 Compact Slide Assembly -PF940C/PFC9 – Cobalt

Designed for builders focused on precision and reliability, the P80 Compact Slide Assembly -PF940C/PFC9 – Cobalt is a factory-machined component engineered to match the Polymer80 PF940C and PFC9 frame platforms. This slide assembly delivers consistent performance for custom pistol builds, offering a balanced combination of weight distribution and cycling reliability. The cobalt finish provides corrosion resistance while maintaining a low-reflectivity surface suitable for range use or defensive applications.

Overview

The P80 Compact Slide Assembly -PF940C/PFC9 – Cobalt is manufactured by Polymer80 as a direct-fit component for their compact frame systems. The slide is constructed from 416 stainless steel with a nitride-treated cobalt finish, ensuring dimensional stability and resistance to wear under repeated firing cycles. Each assembly is fully machined to accept standard Glock-pattern sights, barrels, and recoil spring assemblies, allowing builders to configure the slide with aftermarket or OEM parts. The slide includes a pre-installed channel liner and is compatible with factory-spec striker assemblies, providing a streamlined installation process for intermediate-to-advanced builders.

Features & Specs

This slide assembly is engineered for users who require repeatable lockup and minimized friction during operation. The manufacturing tolerances are held to within .001-inch critical dimensions, reducing play between the slide and frame rails. Key specifications include:

• Material: 416 stainless steel with QPQ nitride finish (cobalt) providing a surface hardness of 58-62 HRC
• Compatibility: Direct fit for Polymer80 PF940C, PFC9, and OEM Glock Gen3 compact frames (G19 length)
• Machining: Fully CNC-machined with flat-top serrations, angled front cocking serrations, and a recessed optic cut area (RMR footprint ready)

The p80 compact slide assembly -pf940c/pfc9 – cobalt features a machined ejection port with a lowered and flared profile to improve case extraction reliability. The breech face is cut to SAAMI-spec headspace dimensions, and the extractor channel is pre-machined to accept standard Glock-pattern extractors. The slide is weight-matched to cycle reliably with standard 17-pound recoil springs, though builders may adjust spring rates based on barrel length or compensator use.

• Optic cut: RMS/RMR footprint with four mounting screw locations; depth set to co-witness with standard-height suppressor sights
• Weight: 8.2 ounces (unassembled, no barrel or spring)
• Finish: Cobalt nitride, salt bath nitrocarburized per MIL-DTL-13924

Who It’s For

This slide assembly is suited for builders who require a factory-machined foundation for a PF940C or PFC9 compact build. It serves users who prefer to assemble their own firearm from a bare frame rather than purchasing a complete pistol, offering control over barrel selection, trigger components, and sight configuration. The p80 compact slide assembly -pf940c/pfc9 – cobalt is also appropriate for those replacing a damaged or worn slide on an existing build, as the cobalt nitride finish provides a durable surface treatment that resists holster wear and solvent exposure. Builders who plan to incorporate a red dot sight will benefit from the pre-machined RMR cut, which eliminates the need for aftermarket milling services. This component is not recommended for first-time builders without prior experience assembling slide components, as proper headspace verification and extractor tuning are required for safe operation.

• Compatible with standard G19-length barrels (4.02 inches) and threaded barrels up to 1/2×28 TPI
• Accepts standard Glock Gen3 recoil spring assemblies and guide rods
• Works with OEM and aftermarket lower parts kits designed for PF940C/PFC9 frames

Shipping & FFL

This slide assembly is classified as a firearm component and does not require transfer through a Federal Firearms License (FFL) dealer when shipped directly to an end user, as it is not a firearm frame or receiver. Shipment is restricted to US addresses only. Buyers must be at least 18 years of age for component purchases and 21 years of age for any frame or receiver products. Local, state, and municipal laws regarding firearm component ownership and assembly are the sole responsibility of the purchaser. By completing this purchase, the buyer confirms compliance with all applicable laws. No firearm frame or receiver is included with this product. All sales are final on machined slide assemblies; returns are accepted only for manufacturer defects verified within 14 days of delivery.