Showing 16–22 of 22 results

  • Echo ARII Caliber Conversion Hammer Spring

    The Hammer Spring for the Echo ARII Trigger is designed .223/5.56. The Caliber Conversion Hammer spring is an upgraded Hammer Spring to achieve consistency for shooting 7.62 x 39.

    You should be able to shoot steel or brass case with your Echo ARII Trigger; both work great with the installation of the Caliber Conversion Hammer Spring.

  • H2 Buffer

  • Tech 15 Aluminum Stripped Upper Receiver

    Fostech, Inc. forged aluminum stripped upper receiver.

    • MFG: Fostech, Inc.
    • Type III Anodized Coating
    • 100% USA Made ??
    • Limited Lifetime Warranty
    • Black Anodized finish
    • Flat-Top with Picatinny rails
    • Mil-Spec dimensions

    This is a stripped upper receiver and does not include internal or external parts such as ejection door assembly, forward assist, bolt carrier group or charging handle.

  • Fostech Strake Brake

    Fostech 5.56 Strake Brake for AR-15. Available in Black Nitride, Stainless Steel and Titanium. The Strake Brake is a muzzle device designed to mitigate recoil and muzzle rise. Fostech’s line of AR-15 components is inspired by jet fighter aircraft and aviation. Holding true to this, in aviation, a strake is an aerodynamic surface generally mounted to the fuselage of an …

  • .22 LR AR-15 Conversion Kit

    .22 LR CONVERSION KIT FOR THE AR-15 PLATFORM. Just swap this drop-in conversion with the bolt carrier group from your 5.56/.223 chambered rifle and you will be ready to shoot .22LR. Ships without a magazine. If you are purchasing this for use with the Echo Trigger, you will also need to purchase the Auto Sear Trip Kit. The Sear Trip …

  • Fostech Ultra-Light Castle Nut

    Shave some more weight off your next build with the FosTech ultra-light castle nut.

  • FosTecH Stripped Carrier with Staked Gas Key (Black Nitride)

    This is a standard full-auto M16 cut bolt carrier. It is designed to function with the Echo AR-II and the Echo Sport.