Swenson Semi Drop-In Barrel 1911 Government 45 ACP 1 in 16" Twist 5.75" Government Threaded (.578"-28 Thread) Steel Matte Black. 
 
The Swenson 1911 Semi Drop-In Barrel in 45 ACP is hammer forged over a precision mandrel within .0001" and bore tolerances held within .0002", this barrel is a surefire way to upgrade or replace your old or worn out barrel. This barrel is manufactured from 4140 steel, heat treated to 44Rc and features a bore with a surface finish of 16 micro or better. This barrel also features a National Match ramp.
Notes:
Swenson is proud to offer this high quality 1911 drop-in barrel, however, due to the vast selection and many different variations of 1911 slides and frames, minor fitting may be required. Outside diameter measures .579" held to a tolerance of .001". Barrel link and link pin sold separately.
 
Product Information
Cartridge
45 ACP
Color
N/A
Finish
Matte Black
Material
4140
Barrel Length
5.75 Inches
Twist
1:16
Threads
.578"-28
Threaded Muzzle
Yes
Country of Origin
United States of America
Compatible With
1911 Government