Overview Reviews Product Description Glock 20 Conversion Barrel Convert your Glock 20 10mm to shoot .40 S&W 416 Stainless Steel Stress relieved and heat treated to RC 40-42 Made in the USA Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Glock 20 Conversion Barrel to .40 S&W Stainless Steel (SALE) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments