JMac Customs


(3 Reviews)
Current Stock:
1.79 Ounces

(R)ailed(S)tock(A)dapter(Evo) Scorpion EVO 3

This railed stock adapter is designed specifically for the Scorpion EVO 3 Pistol/Carbine to allow you to install SIG style stocks! 


  • Allows you to install SIG MPX/MCX style stocks* including the upcoming SB Tactical folding brace
  • Adjustable cheek wield for irons or taller optics
  • No modifications for installation
  • Installs in seconds like the factory stock/end plate
  • 7075 Aluminum
  • Hard Coat Black Anodized

*Not compatible with the PDW style collapsible stocks.

Reviews (3)

Scorpion RSA-EVO

Written by SHOUA VANG on Aug 11th 2021

Very nicely machined piece. Perfect fit and finish. QD sling socket is nice touch in case a brace/stock isn't used. IMO, the best Scorpion stock adapter available.

CZ Scorpion EVO- RSA

Written by Lucius Foster on Nov 12th 2019

The 1913 rear stock attachment fits perfect and is easy to install. You do not need a gunsmith for those of you that are not mechanically inclined. Take a punch or eraser side of a pencil and simple push down on rear button of existing cover that comes attached to your CZ Scorpion EVO and slide rear cover down at the same time. Now reverse steps to install new RSA. Quality product and holds stock/brace firm. A must have! 5 STARS


Written by Luis Rodriguez on Jun 1st 2019

This product was packaged really well. Quality looked really good. Went to slide it on and didn’t want to slide on. Fit was super tight and was catching on the picatinny rail. Because of this it wouldn’t go all the way down and was scrapping plastic off. May need to grind off some material to make it sit right. Don’t know, it may just be my scorpion. Other than that it will look awesome.

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