Description
PF940SC Polymer Frame for Subcompact Builds
The PF940SC represents a cornerstone component for custom firearm builders seeking a reliable subcompact platform. Manufactured as a complete polymer frame assembly, this unit is engineered to accept standard subcompact slide and barrel configurations while providing the ergonomic benefits of a full-size grip module. The PF940SC frame is precision-molded from high-impact polymer, featuring integrated rail sections and a textured grip surface for enhanced control during rapid fire sequences. For builders prioritizing a compact carry solution without sacrificing capacity, the PF940SC delivers a balanced foundation that accommodates double-stack magazines while maintaining a reduced overall profile.
Overview
The PF940SC frame is designed as a direct replacement or foundation for subcompact pistol projects utilizing Gen3-compatible components. Constructed from reinforced polymer, this frame incorporates a 1913 Picatinny rail segment at the dust cover for mounting lights or lasers. The PF940SC includes all necessary trigger housing pins, rear rail module, and locking block assembly, requiring only the addition of a slide completion kit and upper assembly to finalize the build. The frame geometry has been optimized to reduce felt recoil while maintaining a natural point of aim for shooters with varying hand sizes.
Features & Specs
- Material: Injection-molded polymer with glass-fiber reinforcement; durometer tested for impact resistance and dimensional stability across temperature ranges from -20F to 140F
- Rail system: Integral 1913 Picatinny rail with three cross-slots; tested for accessory retention under 500 cycles of recoil simulation
- Grip texture: Diamond-pattern stippling at 20-line-per-inch density on frontstrap, backstrap, and side panels; optimized for wet or gloved hands
- Magazine compatibility: Double-stack 9mm/.40 S&W magazines with a standard capacity of 10-15 rounds depending on state restrictions
- Trigger guard: Undercut design with relief for high-grip shooting positions; internal dimensions accommodate standard trigger shoe assemblies
- Finish: Mold-in-color black with UV stabilizers; no surface coating required for corrosion resistance
- Overall frame weight: 2.6 ounces (bare frame without locking block or pins)
- Width at slide rails: 1.02 inches; grip width: 1.20 inches
- Frontstrap angle: 18 degrees from vertical; trigger reach measured at 2.75 inches from backstrap to trigger face
- Pin hole diameters: 0.154 inches (trigger pin), 0.134 inches (rear rail pin), 0.124 inches (locking block pin)
- Rail material: 4140 steel, heat-treated to RC 38-42, with manganese phosphate coating
Who It’s For
This frame is intended for intermediate to advanced builders who possess a working understanding of firearm assembly and function testing. The PF940SC suits individuals constructing a dedicated concealed carry pistol who desire a modular platform supporting aftermarket slide, barrel, and sight combinations. Gunsmiths performing custom stippling, undercutting, or grip modifications will find the PF940SC polymer structure amenable to hand-finishing without compromising structural integrity. This product is not recommended for first-time builders who lack access to proper fitting tools and headspace gauges. The PF940SC serves as the structural core for a subcompact build and requires mechanical competence to complete safely.
Shipping & FFL
The PF940SC frame is classified as a firearms frame by the Bureau of Alcohol, Tobacco, Firearms and Explosives. This product must be shipped to a Federal Firearms License (FFL) holder for transfer to the purchaser. Upon order placement, the buyer must provide the shipping address of their chosen FFL dealer. The FFL dealer must email a copy of their current license to our compliance department before shipment. A $15 transfer fee may apply at the receiving FFL; this fee is not included in the product cost and is paid directly to the dealer. All shipments are sent via carrier requiring an adult signature upon delivery. The PF940SC frame will not ship to any location where local ordinances prohibit frame-only firearm components. It is the buyer’s responsibility to verify compliance with state and municipal laws before ordering the PF940SC. No returns or exchanges are accepted on serialized firearm frames.







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