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Forward Controls DesignGas System ComponentsMid-Range

Forward Controls Design CNF and ESF-H1 Hardware Pair

Stakable FCD CNF castle nut paired with the steel ESF-H1 rear-QD end plate for a carbine receiver extension.

Price
$71
Brand
Forward Controls Design
Category
Gas System Components

Features

  • •CNF 4140 PH steel castle nut
  • •Four 30-degree staking notches
  • •ESF-H1 4140 steel end plate
  • •Rear-facing QD socket
  • •Two separately sold parts

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Overview

This configured pair combines Forward Controls Design's CNF castle nut with its ESF-H1 end plate. The CNF uses four 30-degree staking notches, while the steel ESF-H1 adds a single rear-facing QD socket. FCD sells the two pieces separately, so both product links are required.

Key Features

  • Four deep, shallow-angle staking notches on the CNF
  • Single rear-facing QD socket on the ESF-H1
  • Steel construction for both pieces
  • Conventional torque-and-stake retention

Pros

  • +Purpose-built staking geometry
  • +Compact rear-facing sling socket
  • +Both pieces support a conventional staked installation

Cons

  • −Two separate purchases
  • −Costs much more than plain mil-spec hardware
  • −QD housing can limit access for some three-lug wrenches

Detailed Specifications

included
Configured pair; CNF and ESF-H1 are sold separately
castleNut
CNF, 4140 PH steel, black nitride, four 30-degree staking notches
endPlate
ESF-H1, 4140 steel, black DLC, one rear-facing QD socket
endPlateWeight
0.50 oz
compatibility
AR-platform carbine receiver extensions
installation
Conventional torque-and-stake installation
partNumbers
CNF and ESF-H1

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Compatibility Tags

family: ar-patternpart: recoil-mounting-hardwarerecoil-system: carbine

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