Description
PM Low CoM (Center of Mass) Stock — Workshop Drop
Micro-run. Built-to-order. Hand-finished. Individually QC’d. Serialized.
The PM Low CoM Stock takes the core PM Stock platform and refines it with one purpose-driven change: a lower tube position that moves the stock’s mass downward to create a lower center of mass. The result is a rifle that feels more grounded and balanced, especially when running modern optics, lights, lasers, and other top-heavy accessories.
Drop closes: when sold out
Run cap: 50 units
Ships: 4–8 weeks
Quick Highlights
- Low CoM geometry: lower tube position designed to shift mass downward for a more planted feel
- Fixed, field-consistent design for repeatable shouldering and cheek weld
- Built-to-order fit: preset or custom Length of Pull (LOP) at time of order
- Adjustable cheek rest for optic / night vision alignment
- Rigid monobody construction for consistent handling and minimal flex
- Carbon-fiber-reinforced polymer for high strength without unnecessary weight
- Hand-finished + individually QC’d per unit
- Serialized micro-run provenance tied to this Workshop Drop
What Makes “Low CoM” Different
Most rifles become top-heavy as you add glass and accessories. The Low CoM Stock addresses that by placing the stock’s tube position lower, shifting the system’s mass distribution downward.
Designed to:
- Feel more balanced in the hands
- Improve the rifle’s settled feel during movement and transitions
- Maintain a consistent, repeatable setup without adjustable-in-field compromises
This is not a gimmick or a cosmetic variant—it’s a geometry-driven refinement built for shooters who care about how the rifle carries, mounts, and settles.
Field-Fixed, Custom-Fit
This is not an adjustable stock—it’s better.
Each Low CoM Stock is configured at time of order, so your fit is intentional and repeatable:
- Choose from preset lengths of pull or submit a custom measurement
- Adjustable cheek rest included for optic / night vision alignment
- Once built, the stock is non-collapsible and ready to install
Fixed. Consistent. Built to fit like a glove.
Material Engineering That Works Anywhere
The Low CoM Stock is built for real conditions—heat, cold, rain, recoil—without turning your rifle into a brick.
- Carbon-fiber-reinforced polymer for high strength with efficient weight
- Impact-, UV-, and temperature-resistant for demanding environments
- Integrated cheek rest & grip interface for a continuous, rigid structure
- Built for long-term reliability and consistent feel
Why It Costs More
Workshop drops cost more because micro-batch production increases setup labor and reduces economies of scale, while each unit receives additional hands-on finishing, unit-level inspection, and serialization. The result is a higher-touch product with tighter process control, better cosmetic grading, and traceable drop history.
What you’re paying for
- Micro-run production: limited quantity per drop (hard cap)
- Built-to-order configuration: made to your selected spec at checkout (LOP)
- Low CoM geometry: lower tube position to shift mass downward for a more planted feel
- Hand-finishing: manual post-process steps for surface quality and final presentation
- Individually QC’d: checklist-based inspection per unit (and per serial)
- Serialization: recorded identifier tied to your order and this Workshop Drop
Printed Militia Workshop Process
- Drop closes / cap reached
- Material + component allocation for the run
- Batch production
- Hand-finishing
- Unit-level QC + cosmetic grading
- Serialization record + pack-out
- Shipment within the published build window
Hand-finishing (what it means here)
This drop includes the following hand-finish steps on every unit:
- Edge break / deburr on contact points and interfaces
- Surface prep for consistent texture and presentation
- Finish application (as applicable) + cure/settle time
- Final inspection + wipe-down before pack-out
Fitment & Compatibility (Read Before Ordering)
- Interfaces over the rear curvature below the buffer tube where your thumb webbing rests
- Fits mil-spec AR lowers with overmolded grips
- Not compatible with billet receivers or lowers with nonstandard rear geometry
- Compatible with mil-spec billet lowers that retain standard curvature
If you’re unsure, verify your lower matches standard rear geometry before ordering.
Installation
- Mounts via a single screw (grip-to-stock interface)
- No special tools required
- Retain your safety detent spring if applicable
What’s Included
- PM Low CoM Stock (preassembled)
- Standard mounting screw
- Optional flush-fit screw (for gas masks/respirators; reduces snag and can improve sight alignment)
FAQ
Q: What makes the Low CoM Stock different from the standard PM Stock?
A: It retains the PM Stock’s core ergonomics and built-to-order fit, but uses a lower tube position to shift mass downward for a more grounded, balanced feel.
Q: Is this “handmade”?
A: It is hand-finished and individually inspected. We avoid “handmade” unless the primary fabrication step is truly hand-formed.
Q: Why is it more expensive?
A: Micro-run production increases setup labor and reduces economies of scale. Each unit also receives additional finishing, serialization, and unit-level inspection.
Q: Will you run this drop again?
A: Not guaranteed. Workshop drops are limited by design; some features or finishes may never return.
Disclaimer
Laws vary by jurisdiction and may change. Always verify your build complies with current local and state regulations. Buyer is responsible for lawful configuration, safe use, and compliance with all applicable laws.
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