Overview Reviews Product Description Ruger SR22 Threaded Barrel Kit, 1/2 x 28 RH Threads. Fits Ruger SR22 pistols with serial numbers 361-7XXXX and higher. This kit contains a factory manufactured stainless steel barrel for optimal fit. 90520 Product Videos Product Reviews Write a Review Write a Review × Ruger RUGER SR22 THREADED BBL KIT 3.5" Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *