MPN: 3HPB-003


  • No more pierced or cratered primers
  • This bolt is complete and compatible with any direct impingement 308 carriers
  • Comes with custom crafted 17-4 firing pin with Blacknitride coating
  • High pressure bolt designed to handle multiple calibers:
    • 308 Win
    • 7.62 NATO
    • 260 Rem
    • 6.5 Creedmor
    • 6mm Bench Rest
    • 22-250


  • Caliber: .308 Win / 7.62 NATO / 260 Rem / 6.5 Creedmor / 22-250 / 6mm Bench Rest
  • Material: 9310 Steel
  • Finish: Blacknitride+
  • Weight:
    • Bolt: 2.72 oz.
    • Firing Pin: 0.35 oz.


  • DPMS Gen I pattern LR308 rifles

*Will not fit DPMS Gen 2 pattern rifles


  • 1x Rubber City Armory Multi-Caliber High Pressure Bolt Assembly
  • 1x Rubber City Armory High Pressure Firing Pin


So, you have decided to build a multi-caliber DPMS style AR-10 and get your hands on a great carrier but it’s not complete. You can’t just stick any old run-of-the-mill .308 bolt that is no rated for 6.5 Creedmor in there and hope it will do the job, it won’t. You must have the RCA Multi HP Calibers Bolt that was designed to work with 6.5 Creedmor and other calibers compatible with the .470 +/- bolt face.

Two Separate Things That Are Meant to Be One

Certainly, the Rubber City Armory high-pressure bolt was engineered with high-performance ammo in mind. The RCA .308 Firing Pin was designed specifically for use with that RCA high-pressure bolt. Moreover, when you combine the right components you get a bolt assembly that fulfills your needs. Matching parts are brought together to create an entirely new part that never before existed. A custom designed bolt assembly, cradling an enhanced .308 firing pin that gives you what you want, performance with reliability.

21st-Century Design

Your new multi-caliber bolt assembly begins its’ life as high-quality 9310 steel. Once it is precision machined to exacting specifications it gets heat-treated to move its hardness on up the Rockwell scale. As if that wasn’t enough a Blacknitride+ enhanced finish is then applied, taking your RCA Multi-Caliber Bolt to the next level. The ultimate level of performance and durability, that when combined with a high-quality bolt carrier results in a game changer for your weapon. You can now run high-pressure ammo without fear of failure in your bolt carrier group. Rubber City Armory stands behind their bolt assembly with a lifetime warranty, rest assured this is the last bolt you’ll ever have to put in that weapon.

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