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Posted: 12/16/2002 8:57:10 AM EDT
Can someone tell me the size of the gas port that COLT uses on their 5.56mm, 1/7 twist barrels for the following models:

20" M16A2
14.5" M4
11.5" Commando

Thanks
Link Posted: 12/16/2002 9:00:37 AM EDT
Mmm heres what I have saved.. Tate originally posted this.. 11.5" barrel, .625: dia., 3.850" from muzzle; Port sizes from .081" to .089" 11.5" barrel, .750" dia., 3.850" from muzzle Port sizes from .086" to .094" 14" barrel, .625" dia., 8.375" from muzzle; Port sizes from .063" to .078" 14" barrel, .750 dia., 8.375" from muzzle; Port sizes from .070" to .086" 16" barrel, .625" dia., 8.375" from muzzle; Port sizes from .063" to 078" 16" barrel, .750" dia., 8.375" from muzzle; Port sizes from .070" to .086" 20" barrel, .625" dia., 8.375" from muzzle; Port sizes from .086" to .093" 20" barrel, .750" dia., 6.875" from muzzle; Port sizes from .093" to .096" 24" barrel, .825" dia., Port size .089" Info from Rick McDowell - Yahoo AR15 list Rick McDowell NRA Life Competition Specialties USPSA Life, Master 105 E. Cass, PO Box 451 641-342-2011 Osceola, Iowa 50213 800-369-4481
Link Posted: 12/16/2002 4:59:34 PM EDT
Excellent post! Thanks
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