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Nexus Firearms

Nexus Evo Gen 2 Roller Delayed Receiver (CZ Scorpion EVO 3 / 3+)

Billet aluminum receiver that converts the CZ Scorpion EVO 3 / 3+ from straight blowback to ball-bearing delayed blowback, dramatically reducing recoil and bolt bounce

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Quick Specs

Price
$350
Weight
N/A
Brand
Nexus Firearms
Category
lower-receiver

Features

  • Billet aluminum receiver
  • Ball-bearing delayed blowback action
  • Drop-in replacement for EVO 3 and 3+ receivers
  • Pairs with Nexus Enhanced Bolt for full upgrade
  • Reduces recoil up to 35% with Enhanced Bolt

Compatibility Tags

family: pccplatform: cz-scorpion-evo3platform: cz-scorpion-3-plus

Overview

Nexus Firearms' Evo Gen 2 receiver replaces the factory polymer Scorpion receiver with a billet aluminum unit that converts the action from straight blowback to ball-bearing delayed blowback. This is the only aftermarket conversion of its kind for the CZ Scorpion platform and the most consequential structural change available for the gun.

The mechanical benefit beyond recoil reduction is the elimination of bolt bounce and the over-travel conditions that drive the platform's documented out-of-battery detonation issue. On a straight-blowback Scorpion, fast aftermarket triggers and binary triggers can outrun bolt speed, the hammer follows the bolt down during reset and peens the soft factory bolt around the striker block hole, and over enough rounds the in-battery safety stops working. The delayed-blowback conversion removes the timing condition that creates the wear in the first place. Paired with the Nexus Enhanced Bolt, recoil drops by as much as 35% and bolt bounce is minimized to the point that suppressed shooting becomes far more pleasant.

The receiver is full OEM parts compatible and is a drop-in replacement for both EVO 3 and Scorpion 3+ receivers. The factory upper, barrel, handguard, and fire control all transfer over. This is an FFL transfer item if it ships as a serialized receiver depending on your local regulations; verify with the dealer before ordering. The price is $350 standalone, and Nexus also sells a complete bearing-delayed pistol with this receiver pre-installed for shooters who want a turnkey configuration.

Key Features

  • Billet aluminum construction, dramatically stronger than factory polymer
  • Ball-bearing delayed blowback action
  • Drop-in replacement for EVO 3 and Scorpion 3+ receivers
  • Eliminates bolt bounce conditions that drive OOB detonation
  • Up to 35% recoil reduction when paired with Nexus Enhanced Bolt
  • Reduced port pop, ideal for suppressed shooting
  • OEM parts compatibility, factory upper and barrel transfer over

Pros

  • +Only true delayed-blowback conversion for the Scorpion platform
  • +Removes the timing condition that drives OOB detonations
  • +Massive recoil reduction with the matched bolt
  • +Quieter port pop for suppressed shooting
  • +Compatible with both EVO 3 and Scorpion 3+

Cons

  • Premium pricing on top of an already-modified gun
  • Best paired with the $399 Nexus Enhanced Bolt for full benefit
  • Lead times on Nexus products can run several weeks
  • FFL transfer may apply depending on serialization
  • Voids any factory warranty on the receiver

Detailed Specifications

Material
Billet aluminum
action
Ball-bearing delayed blowback
compatibility
CZ Scorpion EVO 3 and Scorpion 3+ (drop-in)
pairsWith
Nexus Enhanced Bolt (sold separately, $399)
recoilReduction
Up to 35% with paired bolt
msrp
$350

Compatible Platforms

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