If you mean, will the mag release once you pull the pin to release the upper from the lower, then yes.
UPC: 810035754768
Finish: Black Anodized Hardcoat
Caliber: 5.56 NATO
Barrel: Diamondback Barrels 16″ 5.56, Carbine-Length, Medium, 4150 CrMov, Black Nitride
Barrel Twist Rate: 1:8 RH
Gas System: Carbine Length Gas System
BCG: Shot-Peened, Magnetic Particle Inspected Mil Spec 8620 Carrier
Lower Receiver: Forged 7075 T-6 Aluminum
Upper Receiver: A3 Flattop Forged 7075 T6 Aluminum
Handguard: 12″ M-LOK Rail
Grip: Moe Grip
Stock: Moe Carbine Stock
Magazine: Gen M3 PMAG 10RD
Sights: No Sights
Muzzle Device: A2 Flash Hider (1/2 x 28)
Trigger: Standard Trigger
CA Compliant Attachment: AR Maglock Kit.
The layaway option was pulled from many Items here at Buds earlier this year. The ones to really ask would be Buds. You can give Buds customer service a call at 1-859-368-0371 9am-8pm EST Mon-Fri and see what they say.

Hi Bryan and welcome. Yes, it comes with the CA Mag Lock Device. Layaway has been quite popular, and I suspect Buds has cut back on layaways due to space constraints and need to get some storage space cleared before fully resuming layaways. Cheers, stay safe and enjoy!