Need help with Vietnam era M-16 data

O.D. of the M16A1 barrel is 0.625. To duplicate in tubing you would need to get some in 0.052" diameter. Very expensive, though.

http://www.amazon.com/dp/B000M3NWQ4/ref=asc_df_B000M3NWQ41490447?smid=ATVPDKIKX0DER&tag=dealt14899-20&linkCode=asn&creative=395093&creativeASIN=B000M3NWQ4

http://www0.shopping.com/stainless-steel-304v/u-xk32nhtIUhTAD8sPMkCQ==/info

$4.82 for a 72" long piece of wire in 0.052 diameter. Tubing is much more dear. $62.18 for a 5 pack of 60" long sections...pretty steep just to build one M16A1 unless someone wants to split it up with you.

Hope this is helpful to you.

Ken

Here's the measurements off mine:

OD of barrel between sight and flash suppressor: .0562"

(The barrel is thinnest here), it is 0.628" under the handguards and sight base)

OD of 3prong flash suppressor at base: 0.863"

OD of 3prong flash suppressor at end: 0.678"

Length of 3prong flash suppressor: 1.75"

OD of M16A1 flash suppressor (not shown): 0.863"

Length of M16A1 flash suppressor (not shown): 1.75"

Height of sight base from bottom of barrel: 3"

Length of sight base at bottom: 1.85"

Length of sight base at top: 0.79"

Width of sight base at bottom: 0.79"

Width of sight base at top: 0.50"

Distance between sight base and flash suppressor: 4.8"

Click here for a closeup pic of an M-16 "3 Prong" flash suppressor.

Click here for a closeup pic of an M-16A1 "Bird Cage" flash suppressor.

Mine has an AR-15 lower receiver, but that is an actual Army surplus M-16A1 upper and early M16 furniture on it.