A-Zoom Rifle precision rifle snap caps are a perfect tool for adjusting and tuning your trigger pull, dry firing and smooth bolt cycling practice. CNC-machined from solid aluminum to precise cartridge dimensions, then hard-anodized for smooth functioning and long life. Each round has A-Zoom’s durable “Dead Cap” proven to withstand over 3,000 dry fires while protecting the firing pin. Type: Snap Caps Caliber or Gauge: 243 Win Rounds Per Box: 2 Material: Aluminum