Lantac M-SPEC: Above Mil Spec. Not every customer has the requirement or budget for a fully enhanced top-of-the-line AR15 accessory. Many users simply need a quality milspec component supplied at a sensible price.
M-SPEC® is a range of AR15 accessories and components that follow military specification in dimensions, tolerances, and materials with the addition of a few upgrades and enhancements to raise the performance standard above the ‘milspec’ rating while retaining the same economical price point as traditionally offered by other providers.
Offered in 5.56 NATO caliber, the Lantac M-SPEC NiB 5.56 NATO 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 to ensure internal dimensions are exact to mil specifications. The component is then NiB (Nickel Boron) coated rather than Type M Phosphated, providing increased corrosion resistance, durability, lubricity, and performance.
The bolt is machined from Carpenter 158 or 9310, shot peened and hard turned per military spec. Each BCG is further fitted with a Lantac CP-R360 domed head cam pin, precision machined from 17-4PH stainless steel, hand polished and hardened to H900 condition, which reduces friction and wear within the upper receiver.
