Product Description
MCS AR-15 CARBINE BUILD KIT W/ M4 STYLE STOCK + CARBINE BUFFER TUBE KIT + COMPLETE LOWER PARTS KIT + MIL-SPEC BOLT CARRIER GROUP & CHARGING HANDLE
Finish your AR-15 build with a comprehensive component package that delivers everything needed to complete both your lower receiver and upper operating system. This kit combines a durable six-position M4-style stock, complete Mil-Spec lower parts kit, carbine buffer tube assembly, premium nitride bolt carrier group, and Mil-Spec charging handle into one convenient bundle.
Built around reliable, MCS Mil-Spec compatible components, this package is ideal for new rifle builds, upgrades, or replacing worn parts. The included bolt carrier group is compatible with multiple popular AR-15 calibers, making this an excellent choice for versatile rifle configurations. Whether you're assembling your first rifle or adding dependable components to your next project, this Finish Your Build Kit provides a solid foundation for long-term performance.
MCS Stock & Buffer Assembly
- M4-style 6-position adjustable stock
- Mil-Spec carbine buffer tube
- Receiver end plate
- Castle nut
- Carbine recoil spring
- 3 oz carbine recoil buffer
MCS Bolt Carrier Group
- Complete nitride bolt carrier group
- 9310 steel bolt
- 8620 steel carrier
- Cam pin
- Firing pin
- Firing pin retaining pin
- Extractor assembly
- Properly staked gas key
MCS Charging Handle
- Mil-Spec 7075-T6 AR-15 charging handle
MCS Complete Lower Parts Kit
- Black A2 pistol grip
- Pistol grip screw
- Pistol grip lock washer
- Trigger guard
- Trigger guard roll pin
- Trigger
- Trigger spring
- Trigger pin
- Hammer
- Hammer spring
- Hammer pin
- Disconnector
- Disconnector spring
- Safety selector
- Selector spring
- Selector detent
- Bolt catch
- Bolt catch spring
- Bolt catch roll pin
- Magazine catch
- Magazine catch button
- Magazine catch spring
- Front pivot pin
- Pivot pin detent
- Pivot pin detent spring
- Rear takedown pin
- Takedown detent
- Buffer retainer pin
- Buffer retainer spring
