(Bolt)-
Mpi bolt
Pressure test (hpt) bolt
Shot peeked bolt
Black extractor spring insert
Properly stacked gas key
M16 bolt carrier
------------------------------------------------------------------------------------------
(Barrel)-
Mil-spec barrel steel
Mpi barrel
Pressure test (hpt) barrel
Chrome chamber and bore
1:7 rifling twist
5.56 chamber
M4 feed ramps
Front sight base(FSB)
Taper pins at FSB
Parkerized under FSB
Double shield hand guards
------------------------------------------------------------------------------------------
(Lower)-
Mil-spec dia. Reciever extension
Stacked castle nut
"H" buffer
Mil-spec dia.FCG pins
-----------------------------------------
Things I find to be important for a hard use gun if your a plinker it's not a big deal ! Worse case your gun jams or breaks and a few targets or cans get spared lmao ! But if your a hard use multi purpose m4 do yourself a favor
Combat tactics•summer 2010 chart made by m4carbine.com members and rob sloyer !
Mpi bolt
Pressure test (hpt) bolt
Shot peeked bolt
Black extractor spring insert
Properly stacked gas key
M16 bolt carrier
------------------------------------------------------------------------------------------
(Barrel)-
Mil-spec barrel steel
Mpi barrel
Pressure test (hpt) barrel
Chrome chamber and bore
1:7 rifling twist
5.56 chamber
M4 feed ramps
Front sight base(FSB)
Taper pins at FSB
Parkerized under FSB
Double shield hand guards
------------------------------------------------------------------------------------------
(Lower)-
Mil-spec dia. Reciever extension
Stacked castle nut
"H" buffer
Mil-spec dia.FCG pins
-----------------------------------------
Things I find to be important for a hard use gun if your a plinker it's not a big deal ! Worse case your gun jams or breaks and a few targets or cans get spared lmao ! But if your a hard use multi purpose m4 do yourself a favor
Combat tactics•summer 2010 chart made by m4carbine.com members and rob sloyer !