© Primary ArmsLantac Usa 01-MSPEC-556-NIB-BCG M-Spec 223/5.56 Stainless Steel Nickle Boron Fits AR-15
- Brand
- Lantac USA
- Color
- Nickel Boron
- Caliber
- 5.56x45mm
- Category
- Gun Parts
- Platform
- AR-15
- Gun Part Type
- Bolt/BCG
- UPC
- 614347506295
- MPN
- 01MSPEC556NIBBCG
Overview
The Lantac M-Spec Bolt Carrier Group is precision-machined to strict military specifications for AR-15 platforms chambered in 5.56x45mm. The full-auto style carrier is manufactured from 8620 steel, case-hardened, and ground to exact internal dimensions with a durable nickel boron finish that enhances corrosion resistance, lubricity, and overall performance. The bolt is machined from Carpenter 158 steel, shot-peened, and hard-turned. Additionally, each assembly is fitted with a precision-machined 17-4PH stainless steel CP-R360 domed cam pin, which is hand-polished and hardened to H900 to reduce friction and wear inside the upper receiver.
Price & Stock History
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