LJ's AR parts 16 inch 458 SOCOM barrel
- 16 inch
- 4150V parkerized
- carbine gas length
- uses .875
- 5/8x32 threaded
- m4 modified feed ramps made for the 458 socom ammo
We do recommend the use of a Big Bore upper receiver due to the size of the spent casings the 458 uses.
We do offer a Billet Big Bore upper receiver made specially for this caliber.