Step by step AR15 lower assembly

Here is a detailed step by step video on how to install the lower parts kit and buffer/buttstock assembly for the AR15 and M4 platform rifles.

In this video, we are walking viewers through the process of assembling an AR-15 lower receiver, which involves several steps. Here's a breakdown of what you covered and key details:

**Parts Overview**:
You start by showing the **lower parts kit**, explaining each piece:
**Front and rear takedown pins**: One long (front) and one short (rear).
*Detent springs* and *detents* for the pins.
**Magazine release**: Button and spring.
**Bolt catch and release assembly**: Including the specific spring types.
**Trigger assembly**: With components like the hammer, hammer spring, trigger, trigger spring, disconnector, and related pins.
**Trigger guard**: If your receiver doesn’t have an integrated guard.
*Fire and safety selector* components: Detent and spring.
**Buffer tube assembly**: Buffer tube, plunger, spring, and associated pins.
*Pistol grip and screw* for securing it.

**Assembly Process**:

1. **Magazine Release**:
Begin by inserting the *magazine release assembly* (button, spring, detent) into the receiver.
Use a tool to help push the button into place and secure it with the threaded portion.

2. **Bolt Catch and Release**:
Insert the *bolt catch and release assembly* with its pin and spring.
Tip: Using electrical tape can prevent marring the receiver during installation.

3. **Trigger Assembly**:
Install the *trigger spring**, **disconnector spring**, and **disconnector* into the receiver.
Line up everything carefully and use a push pin to help hold components in place while securing the trigger pin.

4. **Hammer and Spring**:
Install the **hammer**, ensuring the hammer spring is positioned correctly to engage with the trigger assembly.
Do a function check to make sure the hammer locks and releases properly.

5. **Trigger Guard**:
Install the **trigger guard**, making sure the plunger pin is on the left side (as viewed from the back of the receiver), and it’s inserted properly to allow for easy operation.

6. **Pistol Grip and Safety Selector**:
Install the **fire and safety selector**: Ensure the hammer is in the locked position before inserting the selector.
Secure the *pistol grip* using the screw and ensure the safety selector functions correctly.

7. **Rear Takedown Pin and Buffer Assembly**:
Install the *rear takedown pin* and **buffer tube assembly**.
Use the *castle nut* to secure the buffer tube, ensuring the buffer tube is properly threaded and locked into place.

8. **Buffer Spring and Buttstock**:
Install the *buffer spring* and *buffer* into the buffer tube.
Attach the buttstock of your choice to complete the lower receiver assembly.

9. **Final Steps**:
Tighten all components securely, using tools like an *armorer's wrench* to tighten the castle nut and ensure proper function.
Perform a final *function check* on the trigger, safety selector, and hammer.

**Tips & Tools**:
Tools: Hammer, **AR-15 armorer’s wrench**, push pins, and possibly a special tool for disassembly pins.
Suggest using *blue Loctite* on the threads for the castle nut to keep things secure.
Emphasize doing a *function check* after each step to ensure everything operates smoothly.

**Closing**:
End with a reminder for viewers to **like, comment, and subscribe**, ensuring they know you’ll be back with more tutorials.

This video does an excellent job of breaking down a detailed process into manageable steps for viewers. Your explanations are clear, and the tips you provide (such as using a push pin to hold parts in place) are very helpful, especially for beginners. The video flows well, and you provide good insight into the tools needed for each step.

If your trigger does not reset, her is a link to our rumble channel that will show you how to fix it .

Here is a video showing how to install the front takedown pin without the real avid tool.
AR15/M4 front takedown pin installation the easy way
• AR15/M4 front takedown pin installati...