Barrels & PreFits Pre-Fit Your Barrel Blank from $285.00 View Options Barrel Your Action from $335.00 Select Muzzle Threads None (Just a Crown) 5/8x24 1/2x28 3/4x24 9/16x24 EC Tuner (must provide) Select Chamber/ Add to Cart 223 Throat for Berger 85.5 or 90 $125.00 Options/ Add to Cart Proof Research Comp PreFit .224, 7 Twist $725.00 Options/ Add to Cart Proof Research Comp PreFit 6mm 7.5 Twist $725.00 Options/Add to Cart Proof Research Comp PreFit 6.5mm 8 Twist Sale Price:$625.00 Original Price:$725.00 sale Options/Add to Cart Sig SSG 3000 PreFit Service from $575.00 Select Muzzle Threads 5/8x24 1/2x28 9/16x24 None Select Chamber/Add to Cart Muzzle Threads from $85.00 View Options Custom Throat Upgrade $125.00 Select Caliber 0.224 6mm 0.257 6.5mm 7mm 0.308 Throat it