30 cal slut
10-12-09, 18:16
looking from the top down:
this is a colt mtc m4 that i had a gunsmith modify.
the factory gas tube and front sight base were replaced with bcm components (long story, i removed and lost the original parts). the fsb is cut down.
i put about 70 rounds of M855 through this yesterday. rifle functioned perfectly.
however, i noticed some leakage where the gas tube meets the fsb. it's hard to tell, but there is a ring of carbon around the gas tube at the top. you can see some of the residue on the surefire g2 to the right.
didn't bring a chrony with me to measure bullet velocity.
i've done a search on some other forums re: ar15 gas tube leakage. some say it's normal, others say that Colts (although modified) shouldn't be doing this.
http://i44.photobucket.com/albums/f15/30calslut/GasTube.jpg
this is a colt mtc m4 that i had a gunsmith modify.
the factory gas tube and front sight base were replaced with bcm components (long story, i removed and lost the original parts). the fsb is cut down.
i put about 70 rounds of M855 through this yesterday. rifle functioned perfectly.
however, i noticed some leakage where the gas tube meets the fsb. it's hard to tell, but there is a ring of carbon around the gas tube at the top. you can see some of the residue on the surefire g2 to the right.
didn't bring a chrony with me to measure bullet velocity.
i've done a search on some other forums re: ar15 gas tube leakage. some say it's normal, others say that Colts (although modified) shouldn't be doing this.
http://i44.photobucket.com/albums/f15/30calslut/GasTube.jpg