BudsGunShop.com - Suppressor ready?

The barrel is threaded 5/8x24.

Yes it is. Barrel is threaded. Full specs below.
UPC: 816903022502
MFR#: RF00146
Barrel Length: 8.5"
Barrel Material: 4140 Chrome Moly Vanadium
Barrel Finish: Melonite
Barrel Profile: Hbar
Barrel Thread Pitch: 5/8x24
Chamber: 300blk
Twist Rate: 1:8
Barrel Extension: M4 Feed Ramps
Gas System: Pistol Length
Gas Block Type: .750 Low Profile Gas Block
Muzzle Device: A2 Flash Hider
Upper Receiver Material: Forged 7075 T6
Upper Receiver Style: M4 MIL-STD
Upper Receiver Finish: Type III Anodizing
Forward Assist: MIL-STD
Dust Cover: MIL-STD
Handguard Type: Free Float
Handguard Style: M-Lok Thin Rail
Handguard Length: 7"
Charging Handle: MIL-STD
Lower Receiver: Forged 7075 T6
Lower Receiver Finish: Type III Anodizing
Safety: MIL-STD
Fire Control Group: MIL-STD
Buffer Tube: Pistol Tube
Magazine: 5.56 30 Round