This company announced that they will release performance upgrades for airsoft guns soon. While you may visit their site, there's nothing there yet... "SPEED Airsoft designs and manufactures performance components for the popular airsoft M4, G36, AK47 and others.  SPEED Airsoft uses USA grade billet aluminum for quality and strength, and they do all of the manufacturing in Canada with their in-house full CNC machining centers.  Being produced locally in North America, SPEED Airsoft ensures the highest quality and engineering for their products.

Expect to see a roll out of SPEED new products in the next little while.

SPEED Airsoft products will be available through airsoft dealers worldwide.

For more info, visit their web site at www.SpeedAirsoft.com.