FFL-compliant checkout Live inventory verification Pickup / transfer ready
(800) 551-2791 beverlyhillsguns.com
0

Your cart is empty

Total $0.00
Sign In Create Account
Browse Beverly Hills Guns
Navigate by category, brand, and customer workflow.
Training, appointments, transfers, and company pages.
Store & Compliance
Built for modern storefront browsing without losing the firearm compliance workflow behind the scenes.
  • Live inventory validation before checkout
  • Workflow-aware store pickup and transfer routing
  • State-aware compliance filtering
  • Scoped category search that respects browse context
Search Beverly Hills Guns
Search by Manufacturer, Model, UPC, or MPN.
KNS Precision, Inc. Stock Adapter
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

KNS Precision, Inc.

Stock Adapter

$60.00
$51.00
Sale Price
Available California compliant

KNS Precision, Inc. Compact Stock Adapter with Flange, Fits AR/MCX, Converts Buffer Tube to 1913 Rail, Matte Finish, Black, Does Not Fits Standard AR-15 Lower Receiver Compact AR-MCX Adapter with Flange

Key Details
Brand KNS Precision, Inc.
Manufacturer Part Number Compact AR-MCX Adapter with Flange
UPC
SKU KNSCMPARMCXADPWFLANGE
Current Stock 15 available
Quantity Updated Apr 26, 2026 9:40 PM
Already have an account from an in-store purchase? Log in to use that profile for checkout and future orders.
Continue Shopping
Share This Product
Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

All the advantages and versatility of the AR/MCX Adapters without the added rail length that locks into the rear AR15 receiver stock plate pocket. The Compact AR/MCX Stock Adapter allows the user to mount a picatinny-style stock attachment (such as the SIG MPX folding stock or SB Tactical FS1913 brace) in place of an AR15 style buffer tube. Many firearms utilize the buffer tube attachment of the AR15 in order to mount common stocks & braces, but do not mechanically require the tube for an in-line buffer spring. For these weapons, this product offers a modular alternative for attaching stocks or other accessories. The kit is composed of two parts and an attaching bolt. The externally-threaded adapter plug fits into the threaded buffer socket or ring. The adapter rail section fits into the slot in the adapter plug and the two are secured to each other and the firearm by a hex-socket bolt and lock washer.

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
Specifications
Manufacturer: KNS Precision, Inc.
Manufacturer Part #: Compact AR-MCX Adapter with Flange
Model: Stock Adapter
Type: Adaptor