Also, being a flat top upper, just make sure it has the F-marked FSB.
Although new production Colts, it's not F-marked already as all carbines have flat top already.
Just to be sure, need to measure the unmarked FSB.
Also, being a flat top upper, just make sure it has the F-marked FSB.
Although new production Colts, it's not F-marked already as all carbines have flat top already.
Just to be sure, need to measure the unmarked FSB.
If you want to survive...then you must be built for the kill...