Description
A&K STW (PTW) Lower receiver
This is a replacement lower receiver for the A&K STW, a PTW-style AEG. The lower receiver carries the magazine well, pistol grip, trigger and selector, and holds the internal units in place.
A&K’s STW is a PTW-style AEG, following the layout of the Systema Professional Training Weapon (PTW), a platform known for its modular internals and crisp, electronically controlled trigger response. PTW-style rifles use their own internal design, so parts made for standard Version 2 M4 AEGs generally do not interchange with them.
When to replace it
A cracked or distorted lower can cause magazines to sit poorly and internals to move out of alignment. A replacement restores the correct fit and is also useful when rebuilding a rifle from parts. Look for hairline cracks around the magazine well, the pistol grip mount and the rear takedown area, as these are the points that take most of the strain in use.
Magazines and controls
Because PTW-style rifles have their own internal layout, the lower receiver needs to suit both the internals and the magazines you use. When the new receiver is fitted, check that magazines insert, lock and release cleanly and that the selector moves through each position before taking the rifle to a game.
Before you buy
The material, colour and any parts pre-fitted to the receiver are not stated in the listing. Confirm compatibility with your exact replica before ordering, as the original listing advises.
Fitting
Transferring parts to a new lower involves removing the internals, controls and grip. Remove the battery and magazine first and photograph each step. If you are unsure, a technician can do it for you.
Key features
- Lower receiver for the A&K STW
- PTW-style platform
- Replaces a cracked or damaged receiver
- Useful for rebuilds
- Factory A&K part
Compatibility
For the A&K STW PTW-style platform. Confirm compatibility with your exact replica before ordering. Internal parts and controls are not listed as included.
Care and maintenance
Keep the receiver clean, especially around the magazine well, and check screws and pins are secure without overtightening. Store the rifle with the battery removed.
Who is it for?
This receiver suits A&K STW owners repairing damage and technicians rebuilding a rifle.
Please note: Internal parts and controls are not listed as included. Confirm compatibility before ordering.
