This body weight was pinned into your rear from the bolt. One more significant change was the firing pin. The firing pin only had 1 head and used a firing pin spring reducing body weight and mass from the firing pin. Due to A great deal softer primers Utilized in https://colt105inch9mmsmgupperrec95285.blogdigy.com/the-fact-about-colt-10-5-inch-9mm-smg-upper-receiver-assembly-that-no-one-is-suggesting-40502805