The DoubleStar ACE CZ Scorpion Receiver Block provides CZ Scorpion carbine owners with the opportunity to upgrade their stock furniture with Ace folding stocks and other stock accessories from the company. The ACE CZ Scorpion Receiver Block requires no modifications from the end user and will directly replace the receiver joint located at the rear of the gun easily. Constructed with 7075-T6 aluminum Furnished with hard-coat anodized black finish Not compatible with Ace push-button folding mechanism The DoubleStar ACE CZ Scorpion Receiver Block is compatible with all Ace folding stocks and stock sets, increasing the rifle’s versatility with aftermarket ac Mfg: Double Star