KNS Compact AR/MCX Stock Adapter
Convert your AR or MCX buffer tube to Picatinny rail mounting with this compact adapter. Enables use of modern stocks and braces without standard AR-15 lower receiver compatibility.
Modernize Your Platform
The KNS Compact AR/MCX Stock Adapter solves a real-world problem: many modern firearms use AR-15 buffer tube attachments for convenience, but don't actually need the mechanical function of an in-line buffer spring. This adapter lets you replace that tube with a true Picatinny rail interface.
What You Get
This two-piece system includes:
- Externally-threaded adapter plug that screws directly into your firearm's threaded buffer socket
- Picatinny rail section that locks into the adapter plug
- Hex-socket bolt and lock washer for secure assembly
Real Advantages
Compact design means no added rail length protruding into the receiver pocket—a cleaner, more integrated look.
Modular versatility opens up your accessory options. Mount SIG MPX folding stocks, SB Tactical braces, or any Picatinny-compatible stock without compromise.
Solid engineering from KNS Precision ensures reliable performance and repeatability.
Important Note
This adapter is designed for AR and MCX platforms and does not fit standard AR-15 lower receivers. Verify compatibility with your specific firearm before purchase.
Features
- this product will not work with a standard ar 15 lower and the mcx upper
- intended only for applications where the carrier and buffer tube do not protrude past the receiver ring
- standard configuration ar15 style rifles will not function using this product
- 10/22 charger will not fit
