Wanted: Bushmaster ACR Components

Looking for hardware for Bushmaster ACR Lower - specifically:

1. Mag catch/release/spring assembly

2. Lower front and rear takedown pins

3. Hammer spring

4. Selector detent plate

Looking for Bushmaster ACR Gas system components- specifically:

1. Op rod/piston

2. Piston guide

Other miscellaneous parts:

1. Action spring assembly

2. Trunion barrel lock plunger, plunger spring, plunger roll pin