The Rock Island Armory 10mm Ultra MS (1911 platform) weighs 38 oz. empty.
The Glock 20 is only 28 oz. empty. That's 10 fewer ounces. In other words, the steel framed 1911 weighs 1.33 times what the fantastic plastic gun does.
But, if you load them both, the weight gap will narrow a bit, because the Glock holds a lot more ammo! Glock = 15 +1. RIA = 8 + 1. The Glock's extra 7 cartridges are another 18 grams or 0.64 oz. each (per a dude on another forum who weighed several 10 mm auto factory loaded rounds). So the 10 oz. weight advantage of the Glock will be cut in half, and you'll only save a bit over 5 ounces.
Fully loaded Glock 20: 28 oz gun + 9.9 oz. ammo = about 38 oz.
Fully loaded Rock Island Armory: 38 oz. gun + 5.6 oz. ammo = 43.6 oz.
The Glock 20 is only 28 oz. empty. That's 10 fewer ounces. In other words, the steel framed 1911 weighs 1.33 times what the fantastic plastic gun does.
But, if you load them both, the weight gap will narrow a bit, because the Glock holds a lot more ammo! Glock = 15 +1. RIA = 8 + 1. The Glock's extra 7 cartridges are another 18 grams or 0.64 oz. each (per a dude on another forum who weighed several 10 mm auto factory loaded rounds). So the 10 oz. weight advantage of the Glock will be cut in half, and you'll only save a bit over 5 ounces.
Fully loaded Glock 20: 28 oz gun + 9.9 oz. ammo = about 38 oz.
Fully loaded Rock Island Armory: 38 oz. gun + 5.6 oz. ammo = 43.6 oz.