AR-15 Cobra Stock MK2 Ambi Mil Spec Lower Parts Build Kit

AR-15 Lower Build Kit Cobra MK2 Stock

✅ Choose Standard or Ambi Configuration
✅ FREE SHIPPING

Upgrade your AR-15 build with this premium Lower Build Kit featuring the Cobra MK2 6-Position Stock. Designed for reliability, fit, and function, this kit includes everything needed to complete your 80% lower – just add your stripped lower receiver. Ideal for new builds or lower rebuilds, it provides smooth cycling, modularity, and rock-solid performance.

✅ Cobra MK2 Stock – 6 Position Adjustable
Rugged, ergonomic design for comfort and control with multiple length-of-pull settings.

✅ Carbine Buffer Tube (Mil-Spec)
Precision-machined to Mil-Spec dimensions for a secure and reliable stock fit.

✅ 3.5 oz Carbine Buffer & Spring
Perfectly tuned for 5.56/.223 cycling with standard carbine systems.

✅ Nitride End Plate
Corrosion-resistant and durable under heavy use.

✅ Mil-Spec Castle Nut
Secures your buffer tube in place for solid performance.

✅ Complete ELG Lower Parts Kit w/ Fire Control Group (FCG)
Includes all necessary small parts for your lower – precision machined and reliable.

✅ A2 Pistol Grip
Classic, proven design with comfortable texturing and finger groove.

✅ Rubber Wedge (if needed)
Optional insert for a tighter upper/lower receiver fit – reduce rattle and improve accuracy.

? Optional Ambidextrous Upgrade Includes:

✅ Ambi Safety Selector
Perfect for left-handed or dual-side operation.

✅ Dual Sling End Plate
Mount your sling on either side for added versatility.

✅ Extended Takedown/Pivot Pins
Easier disassembly and maintenance with extended grips.

Whether you're building your first AR or upgrading a current setup, the Cobra MK2 Lower Build Kit delivers high-performance parts in one complete package. Choose your configuration – Standard or Ambi – and take the guesswork out of completing your lower.