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Proof Research 100462 AR-Style Barrel 223 Wylde 20" Rifle Length Gas System 1:7" Twist 4 Grooves, 1/2"-28
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Proof Research 113714 Bolt Action Barrel Blank 243 Cal 28" Competition Contour 1:7" Twist 4 Grooves, Stainless
Proof Research 101094 Bolt Action Barrel Blank 264 Cal 28" M24 Contour 1:8" Twist 4 Grooves, Stainless Stainle
Proof Research 121665 AR-Style Barrel 6.5 Grendel 18" Rifle Length Gas System 1:8" Twist 4 Grooves, 5/8-24 tpi
Proof Research 100530 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:7" Twist 5 Grooves, 5/8&q
Proof Research 101681 AR-Style Barrel 223 Wylde 20" Rifle Length Gas System 1:8" Twist 4 Grooves, 1/2-28 tpi,
Proof Research 100523 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:8" Twist 5 Grooves, 5/8-2
Proof Research 100004 Carbon Fiber AR-Type 223 Wylde 16" Barrel with Mid Gas System
Proof Research 100448 AR-Style Barrel 223 Wylde 18" Rifle Length Gas System 1:8" Twist 4 Grooves, 1/2-28 tpi,
Proof Research 100387 AR-Style Barrel 223 Wylde 11.50" Rifle Length Gas System 1:7" Twist 4 Grooves, 1/2"
Proof Research 100059 AR-Style Barrel 6.5 Creedmoor 24" Rifle +2 Length Gas System 1:8" Twist 4 Grooves, 5/8-2
Proof Research 101292 Carbon Fiber AR-Type 308 Winchester 20" Barrel with Rifle Gas System
Proof Research 100639 Carbon Fiber AR-Type 6.5 Creedmoor 22" Barrel with Rifle 2+ Gas System