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KNS Precision
Overview
The KNS Precision AR/MCX Stock Adapter Kit is designed to allow the use of a Mil-Spec carbine buffer tube on your AR or MCX platform, providing a reliable connection for your stock. Constructed from aluminum, this adapter ensures durability while maintaining a lightweight profile. This stock adapter is frequently utilized in builds featuring a mid-length gas system chambered in 5.56 NATO, making it a versatile choice for various configurations.
Builders have been adding the KNS Precision AR/MCX Stock Adapter KIT without Flange to their builds on GunPartPicker since February 2026. All time, it is the ninth most added stock adapter on the site. Builds with this stock adapter are mostly chambered in 5.56 NATO (88%, then .223 Wylde 13%), mostly on mid-length gas (88%, then carbine-length 13%), and mostly AR-15 (80%, then AR-10 20%).
Today the one retailer we track has it in stock. Buying today, the lowest price is $51 at Primary Arms.
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the KNS Precision AR/MCX Stock Adapter Kit without Flange
| Build | Parts | Total |
|---|---|---|
![]() | 24 | $3272.66 |
![]() | 25 | $840.78 |
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