Two selectable semiautomatic modes. No automatic-fire mode.
The Select-Fire M&P 2.0 Builders Kit is a three-piece prototype assembly designed to provide two selectable operating modes:
Standard semiautomatic operation
Forced-reset semiautomatic operation
Both settings are intended to remain semiautomatic, requiring a separate function of the trigger for every round fired. This product is not designed or intended to provide fully automatic fire and is not a machine-gun conversion device.
Three-Piece 316 Stainless Steel Construction
Each builders kit contains:
Housing
Trip arm
Selector lever
All three components are cast from 316 stainless steel. Because these are cast components rather than finished CNC-machined parts, the surfaces will have a naturally textured, slightly gritty appearance.
This is a builders kit, not a finished drop-in assembly. Hand polishing, finishing, fitting, and proper function testing will be required before use. When correctly finished by a knowledgeable and qualified individual, the components can achieve a much smoother, CNC-like operating surface.
Only a minimal amount of material should be removed during finishing. Excessive polishing, grinding, drilling, or alteration may permanently damage the components, create an unsafe condition, or prevent the assembly from operating correctly. Professional gunsmith installation and inspection are strongly recommended.
Pinning Provision (accepts 1x8mm roll pins/spring pins)
The housing includes provisions that allow the three components to be permanently pinned together, ensuring they remain securely assembled during installation, removal, and operation.
The required retaining roll pins are not included.
Because the components are cast, the retaining holes may contain casting residue or dimensional variation and must be professionally inspected and properly prepared before pins are installed. Do not force an improperly sized pin into the assembly.
Designed for compatible M&P 2.0 platforms chambered in:
9mm
.45 ACP
10mm
Compatibility can vary between individual firearms, generations, component tolerances, aftermarket trigger assemblies, and previous modifications. Additional professional fitting or supporting components may be required.
Important Product Distinction
This three-piece cast builders kit is not the same product as the upcoming CNC-manufactured Not a Switch model.
The future Not a Switch model will be a separate four-piece CNC-machined design. Components from the two products should not be assumed to be interchangeable.
Prototype Builders-Kit Notice
This product is sold as an unfinished prototype builders kit. It requires knowledgeable inspection, finishing, fitting, installation, and extensive safety and function testing before live-fire use.
Due to the unfinished and prototype nature of this product:
All sales are final
No refunds or exchanges will be accepted
Installation and use are performed entirely at the purchaser’s risk
The purchaser is responsible for verifying compatibility and legal possession
The purchaser must comply with all federal, state, and local laws
144.1 Recoil Systems is not responsible for damage to firearms, components, or other property, personal injury, death, unlawful possession, improper installation, incorrect fitting, unauthorized modification, negligent handling, or misuse of this product.
Never install or test this product in a loaded firearm. Installation, inspection, and initial testing should be completed by a qualified gunsmith familiar with the applicable firearm platform.
No Manufacturer Affiliation
This product is an independently manufactured aftermarket component. It is not manufactured, authorized, endorsed, sponsored, or approved by Smith & Wesson, Glock, or any other firearm manufacturer.
“Smith & Wesson,” “M&P,” “Glock,” and other referenced names are trademarks of their respective owners and are used solely to identify potential compatibility.
Legal Notice
This product is designed and marketed exclusively for semiautomatic operation. It is not intended to cause a firearm to discharge more than one round through a single function of the trigger.
Firearm and forced-reset-device laws may vary by jurisdiction and may change. Purchasers are responsible for confirming that possession, installation, and use are lawful in their location before ordering.




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