• Close-up of a person holding a black firearm with a pink trigger, outdoors.
  • Close-up of a rifle barrel on a dry grass background
  • Close-up of a black rifle stock on a brick surface
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MLock Finger Stop

MLock Finger Stop

€0,99 EUR
€2,00 EUR €0,99 EUR
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A reinforced M-Lock finger stop built in three separate parts for maximum strength. Splitting the design this way means every part prints in its strongest orientation — no support material, no weak layer lines where it matters most.

M-Lock finger stop mounted
Built for Strength

Three Parts, Zero Supports

Finger stop backside view

Fingerstop, Lock & Adapter

Print three parts: the fingerstop itself, the M-Lock lock piece, and the adapter. The adapter fits inside the fingerstop and prevents it from rotating once assembled — that's what removes the need for support material entirely.

Every file is already orientated correctly for printing. Just load them into your slicer and go. Fuzzy skin can be added if you want extra grip texture.

Assembly

Simple to Put Together

Assembled finger stop parts

Slide, Lock, Done

The adapter slides into the fingerstop body to lock it against rotation, then the M-Lock lock piece secures the whole assembly onto your rail. A CS M4×12mm bolt pulls everything together and locks it in place.

No glue required — just the bolt, your M-Lock pins, and a hex key.

Finger stop side view mounted on rail
Options

Two Styles Included

Both versions are included in the files so you can print whichever suits your grip and setup best.

Two finger stop style variants side by side
3D Printing

Print Settings

  • Print all 3 parts: Fingerstop, M-Lock lock, and Adapter
  • Files are pre-orientated — no support material needed
  • 3–5 walls for strength
  • 20–30% gyroid infill
  • Optional: add fuzzy skin for extra grip texture
What You'll Need

Hardware

  • 1× CS M4×12mm bolt
Materials

What to Print In

Recommended PETG

Built to handle real recoil and grip pressure. PETG gives the strength and impact resistance this part needs to hold up over time. Prusament, Bambu Lab, and Polymaker are my preferred brands — Polymaker PETG is what I use myself.

M-Lock Pins

A plastic M-Lock lock piece is included and works fine, but it will loosen over time with repeated use. Metal M-Lock pins are the better long-term option for a setup that stays tight.

Printed and tested on a Prusa Core One using Polymaker PETG. Parts are designed with a clearance of ~0.15–0.3mm — if your printer runs tighter or looser tolerances, a light sand or test fit may be needed.

Metal Pins Recommended

The included plastic lock works, but tends to loosen with repeated mounting and removal. Swapping to metal M-Lock pins keeps everything locked tight long-term.

Digital delivery: After your payment is confirmed, your file will be delivered automatically. This usually takes 2–5 minutes. You'll then receive an email with a download link.

Need help or build advice? Join the community on Discord: https://discord.com/invite/XFdMX947JP

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License

Private Use Only

📄 What you can and can't do

This file is for private and personal use only. You may 3D print this model for yourself and share photos of your prints online.

You may not resell this product in any form — printed parts, kits, assembled units, or the digital files themselves.

Full terms available here: https://www.quizcen.com/policies/terms-of-service

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