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    This brake is designed to reduce recoil, keep excess noise down and allow owners to work on their rifles in states required to pin brakes. It is .720 diameter apx the same as the barrel diameter so the gas block will slide over after it has been pinned, it only adds 5/8" to the length of the barrel.
    4 - 1/4" ports spaced evenly around the device, does not need to be clocked. A crush washer is not needed or included.
    This is an example of the raw machined brake only. They will be melonite treated black to match the barrels.

    For use with 6.8  caliber and smaller with 5/8-24 threaded muzzles.

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    JGreen email

    Sells for $680

    PressureTrace Internal Ballistics System

    This is the interior ballistics portion of the RSI Shooting Lab system. It consists of pressure instrumentation and software that runs on a Windows PC. You must have access to a PC while using this product.

    Barrel harmonic calculations are also provided when velocities are entered from a chronograph but a chronograph is not required for operation. PressureTrace II will work equally well with any good chronograph

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      Blem-  threads and bore are straight (1st op)  During the second op that cuts the chamfer on the front they may be off a little. Will not effect function and can only be notice if looking close down the barrel.

    If a quiet muzzle device is your number one requirement this is the device. The length was held to a minimum to decrease weight and not add length to the firearm. Noise is directed down range. Chamfer on front of device pushes high velocity turbulant gases to the outside to prevent disturbing bullet flight. Noticable recoil reduction. Crush washer is not needed.

    .840" dia, 1.5"long, 1.9oz

    For use with our SOCOM 5.56, 3 Gun 5.56 and Valkyrie  barrels with 5/8" muzzle threads



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      (ARP) AR15 Performance LLC

      Key West, FL 33040

      Hi performance 5.56 & 6.8 SPC barrels and parts since 2007

      The best way to contact is by email

      Phone: 801-750-4216  8am-5pm eastern time  M- Fri only
      Sorry we do not export anything and do not have a storefront. Everything must be purchased online.

      6.8 SPC II, 5.56, 223 wylde, 30 Herrett, TAC 6,