Buffer Retainer Spring

The Buffer Retainer Spring is used to keep the buffer retainer in place to keep the buffer and buffer spring in place.  Here is a picture of one: You can purchase one as part of a Lower Parts Kit, or individually here, or here, or here Here you can see how it is installed in … [Read more…]

Buffer Retainer

The Buffer Retainer is used to keep the buffer and buffer spring in the buffer tube.  Basically just a little pin that sticks up to hold it in.  Here is a picture of one: You can purchase one here, or a set of them here, or even here Here you can see where it is … [Read more…]

Bolt Catch Roll Pin

The Bolt Catch Roll Pin holds the bolt catch release in place at a pivot point.  Here is a picture of one: You can purchase a Bolt Catch Release here, or here, or in a lower parts kit here Here is a picture of one being used when assembling an AR15 lower to retain the … [Read more…]

Bolt Catch Release

The Bolt Catch Release is the part of the AR15 lower that will stop and hold the bolt back at the point that the magazine has ran out of ammo.  It is held in place with a roll pin and has a spring and plunger to keep it in the correct position.  Here is a … [Read more…]

Bolt Catch Plunger Spring

The Bolt Catch Plunger Spring goes with the bolt catch plunger to put pressure on the bolt catch.  This is one of the springs that usually comes in a lower parts kit.  Here is a picture of the spring: You can purchase a Bolt Catch Plunger Spring (click here for Colt version), or click here … [Read more…]