Proof Research.308 Heavy Palms 5G 1.25 Breech - 30" - 1-9" Twist - Stainless Steel 

#4 - SS - .30 - 11T - 4G - 26"

#11 Medium Palma .224cal 1:7 Twist 30", 4 Groove, Stainless Steel Breech Diameter: 1.25" Breech Length: 3.00" Neck Length: 5.50" Neck Diameter: 0.90" Muzzle Diameter: 0.82" Finish Length: 30" Blank Length 31"

#9 Heavy Varmint Contour Barrel Blank - .30 cal, 1:10" Twist, Stainless Steel, 5R Breech Diameter: 1.25" Breech Length: 5" Muzzle Diameter: 0.9" Finish Length: 30"

Palma Contour Descr. A B C D E F Wght #18-Whitley Med. Palma 1.250 3.000 5.500 .950 30" .830 5.65# The uniformity in Bartlein barrels and finish of the bores is second to none.Their rifling machines are so accurate, they can carry the twist rate to the 4th decimal point (example: 11.3642).The process of Single Point Cut Rifling is the most stress free way to rifle a...

Carbon Fiber #13 Remington Varmint Contour, 6.5mm 1:7.5" Twist, 22", 4 Groove, StainlessSteel Breech Diameter: 1.20" Breech Length: 2.00" Neck Length: 4.35"   Neck Diameter: 0.95" Muzzle Diameter: 0.83"   Finish Length: 22"   Blank Length 23"    

Bartlein Carbon Wrapped Barrel - SP4 - 6.5mm - 1-8 -  5R - 24 - Black 

Bartlein Palma 11 Contour -.224 -  4 Groove - Finish @ 30" - SS - 1-6.25" Twist 

Bartlein .277 Calibre Gain Twist 1-8-8.5" Twist 22" Finish  

Bartlein .30 Cal P12 Heavy Palma -12 Twist- 5R Rifling

Criterion Ruger RPR - 6.5X47 - 7.5T - 26" - Standard Rifle Contour

Criterion Ruger RPR - 6.5X47 - 7.5T - 26" - Heavy Target Contour

Criterion Ruger RPR - 6XC - 7.5T - 26" MTU Contour

Heavy Palma SSSM 6.5mm - 7.5T - Finish 26"

IBI Rimfire Drop-in Barrel Receiver: Ruger 10/22 Contour: Straight 0.92" Twist Rate: 1:16" Length: 22" Fluting: No Muzzle Specs: No threads (11 Degree Crown)