Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Daniel Defense DD5 AR-10 308 Win 18" 1:10 Twist 5/8-24 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for CZ 455/457 22 LR 18.5" 1:16 Twist 1/2-28 Thread

Proof Research Inc

Proof Steel Drop in Barrel for Carbine Gas System AR-15 Compatible Firearms 223 Wylde 11.5" 1:7 Twist 1/2-28

Proof Research Inc

Proof Steel Drop in Barrel for Carbine Gas System AR-15 Compatible Firearms 223 Wylde 20" 1:7 Twist 1/2-28

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for AR-15 Mid Length 14.5" 223 Wylde 1:7 1/2-28 Thread

Proof Research Inc

Proof Steel Drop in Barrel for Rifle Gas System AR-15 Compatible Firearms 223 Wylde 20" 1:8 Twist 1/2-28

Proof Research Inc

Proof Steel Drop in Barrel for Carbine Gas System AR-15 Compatible Firearms 300 BLK 16" 1:8 Twist 5/8-24

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Ruger 10/22 22 LR 16.1" 1:16 Twist 1/2-28 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Small Shank Savage Rifle 6.5 PRC 24" 1:7.5 Twist 5/8-24 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Ruger 10/22 22 LR 18.5" 1:16 Twist 1/2-28 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for CZ 455/457 22 LR 20" 1:16 Twist 1/2-28 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Daniel Defense Delta 5 Rifle 308 Win 20" 1:10 Twist 5/8-24 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Small Shank Savage Rifle 6.5 Creedmoor 24" 1:8 Twist 5/8-24 Thread

Proof Research Inc

Proof Steel Drop in Barrel for Mid Gas System AR-15 Compatible Firearms 223 Wylde 16" 1:7 Twist 1/2-28

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Daniel Defense DD5 AR-10 6.5 Creedmoor 20" 1:8 Twist 5/8-24 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Ruger 10/22 22 LR 20" 1:16 Twist 1/2-28 Thread

Proof Research Inc

Proof Steel Drop in Barrel for Pistol Gas System AR-15 Compatible Firearms 300 BLK 12.5" 1:7 Twist 5/8-24

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Daniel Defense Delta 5 Rifle 6.5 Creedmoor 24" 1:8 Twist 5/8-24 Thread

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Ruger Precision Rifle 6.5 Creedmoor 24" 1:8 Twist 5/8-24 Thread

Proof Research Inc

Proof Steel Drop in Barrel for Rifle Gas System AR-15 Compatible Firearms 223 Wylde 18" 1:7 Twist 1/2-28

Proof Research Inc

Proof Carbon Fiber Drop in Barrel for Daniel Defense Delta 5 Rifle 6 Creedmoor 24" 1:7.5 Twist 5/8-24 Thread

Proof Research Inc

Proof Steel Drop in Barrel for Rifle Gas System AR-15 Compatible Firearms 6 ARC 16" 1:7.5 Twist 5/8-24

Proof Research Inc