Criterion Barrels, 416R Straight Taper Blank, 31.0” Length, 1.250” Diameter, 30 Cal, 1-8 Twist
NOTICE TO END-USER: Most of our products including; (but not limited to) barrel blanks, are for domestic (Canadian) use ONLY. Exporting any of these products outside of Canada is expressly PROHIBITED under I.T.A.R. and E.A.R. laws and regulations; enforced by the U.S. State Department and the U.S. Commerce Department.
Criterion Barrels is well known for its wide selection of premium match grade rifle barrels. Many in the firearm industry are unaware that the majority of our capacity is allocated toward OEM services for a wide range of premium rifle and barrel manufacturers. While many barrel manufacturers limit themselves to a single rifle platform or a selection of barrel blanks, Criterion offers a full spectrum of services for many custom rifle shops and manufacturers of various different sizes.
Our barrels and blanks are manufactured with gun barrel quality, ordnance-grade416Rstainless steel. Our steelisheat treated and double stress relieved when they arrive from the mill.
Button Rifling
Our button rifling operation is second to none in the firearm industry. Buttons are finished in-house, allowing us to maintain tolerances not found with other manufacturers. Our custom built CNC button rifling machine allows us to offer twist uniformity exceeding standards previously only offered with single point cut rifling techniques.
Lapping
Most production barrels are generally not lapped; however, the lapping process is absolutely essential for accuracy. For this reason, before chambering and crowning operations, we lap the bores to remove tooling marks and to improve the surface finish and bore uniformity.
Heat Treating
Button rifling does put stress into the steel. That is why we thoroughly stress relieve the barrels again after buttoning to ensure dimensional integrity during the turning and milling operations. By internalizing this heat treating operation we are able to more effectively remove any residual stresses resulting from the button rifling operation.
Chambering & Contouring
RDSC is proud to offer custom barrel chambering, threading and contouring in-house. This service is offered under our custom-shop banner, Shield Rifleworks. All of our barrels are precision CNC machined with the upmost attention to detail. Email info@rdsc.ca