Is the barrel threading on springfield m1a's (same as usgi?) different from norinco m14 barrel threading? I sold my nm flashhider from my national match m1a barrel and bought a smith ent vortex used on a guys norinco m14 and it will not fit, not even close. The smith from the norinco m14 is way smaller..
help on m1a barrel threading..
- Thread starter gutinater
- Start date
Norcinco threads are metric.
Springfields are Standard and the same as USGI.
Is it an authentic SEI Vortex???? There are some knock offs out there.
I have run SEI vortex Flash Suppressors on the Chinese (the metric threads were close enough for it to thread on) and American barrels.
If it was a vortex that was threaded for an AR10 it won't work.
Smith enterprise vortexes come in 1/2 x28 , 5/8x24 , among other thread patterns.
However, a smith vortex for an M14, comes is a Direct connect version, threading onto the factory muzzle threads.
The second version for the m14(m1A) attaches with a castlenut the same way as the factory flash hider.
Then there is the 1/2x28 threaded version that used to be made by a canadian outfit. A great many of these have been fitted to "chop-mod" chinese barrel that have been reduced from 22" to 18.5", 1/2x28 thread.
Can you post some pics of yours?
Smith enterprise vortexes come in 1/2 x28 , 5/8x24 , among other thread patterns.
However, a smith vortex for an M14, comes is a Direct connect version, threading onto the factory muzzle threads.
The second version for the m14(m1A) attaches with a castlenut the same way as the factory flash hider.
Then there is the 1/2x28 threaded version that used to be made by a canadian outfit. A great many of these have been fitted to "chop-mod" chinese barrel that have been reduced from 22" to 18.5", 1/2x28 thread.
Can you post some pics of yours?
