Since 1969

"The World's Most Reliable AR/MSR Bolt"

SRC Relia-Bolt - In the half century of service of the M16/M4 platform and its civilian cousin the AR15, never has there been a stand-alone component that provides such an improvement in the reliability of the weapon system. The redesigned lugs of the Relia-Bolt virtually eliminate the most common MSR malfunction, the bolt to barrel extension jam. Haven’t cleaned your rifle? Is it out of time? Relia-Bolt compensates by providing a patented camming action that allows the bolt to continue into battery. By rounding and tapering the lugs, the Relia-Bolt will push past carbon build-up, sand and dirt, unlike the square edges of traditional MSR bolts that would typically jam.

  • 100% Compatible with .223/5.56 MSR Platforms
  • No Modification Required
  • Machined from S7 tool steel
  • Coated with NP3
  • Covered by a lifetime warranty

Even after thousands of rounds without cleaning, carbon residue can be wiped away with a soft cloth.

Click Here to Buy
You will be taken to the SRC Homepage when you click the link above. All purchases of the SRC Relia Bolt must be made from the SRC Homepage. They are a trusted site and vendor.

The pictures below demonstrate how after thousands of rounds fired, the bolt lugs clean themselves and the barrel extension during use.

SRC Relia-Bolt SRC Relia-Bolt

SRC Relia-Bolt Is...

SRC Relia-Bolt
Standard Bolt

SRC Relia-Bolt
SRC Relia-Bolt

100% Compatible With .223/5.56 MSR Platforms
Relia-Bolt is drop-in compatible with all existing .223/5.56 variant parts groups and bolt carriers. No modification or tools are required for installation.

Unmatched in Strength and Durability
The Relia-Bolt is machined from S7 tool steel, which significantly increases its strength. When compared to mil spec Carpenter 158, the S7 steel provides a 75% increase in tensile strength, and 60% improvement in yield strength.

The Ultimate in Corrosion Existance
Every Relia-Bolt is coated with NP3, an electroless nickel-based finish that co-deposits sub-micron particles of pTfe (polytetrafluoroethylene) , commonly known as Teflon™. Even after thousands of rounds without cleaning, carbon residue can be wiped away with a soft cloth.

Covered by a Lifetime Warranty
The LW for the SRC Relia-Bolt covers defects in materials and workmanship, all parts and labor to repair or replace defective products and return shipment within the continental United States.