Rainier Arms

Quick Links

Browse by:

Browse by:

Informative Links

Payment Methods

  • VisaMaster CardCheck / Money OrderDiscover Card

You are here: Home | Browse | Receivers - Upper | Detail

Product Detail

Upper: MEGA Billet Upper

Click to zoom!
List Price: $185.00
Your Price: $175.00
You Save: $10.00

Product Information


  • Machined from billet 7075-T6 aluminum vs. the more commonly used 6061 for a 70% increase in strength.
  • Upper receiver has been re-designed to incorporate increased wall thicknesses for added strength.
  • Lug Angle at the shell deflector has been altered to 60.0 for increased effectiveness.
  • Black Hard anodized with a surface hardness of 60 Rockwell.
  • M4 Feed Ramps
  • Comes Without Forward Assist & Trap Door

Additional Images

Additional Image 1 Additional Image 2 Additional Image 3

Please: Login | Register

Related Products

Upper Parts Kit

Mega Billet Lower - GTR-3H (Ambi)

Upper: MEGA Billet Side Charging Upper