The Lantac M-SPEC Bolt Carrier Group is ideal for budget builds where quality and reliability are still paramount. Not every customer has the requirement or budget for a fully enhanced, top of the line AR-15 accessory. Many users simply need a quality milspec component supplied at a sensible price. Lantac M-SPEC is a range of AR15 accessories and components that follow the military specification in dimensions, tolerances and materials with the addition of a few upgrades and enhancements to raise the performance standard of the product above the 'milspec' rating, while retaining the same economical price point as traditionally offered by other providers. The Lantac M-SPEC BCG is precision machined to milspec dimensions and tolerances. The carrier is full auto style with increased mass and is manufactured from 8620 steel, case hardened and hard turned/ground so that internal dimension are exact to mil specifications. Then an upgraded finish is applied, rather than Type M Phosphated to...