The M16 assault rifle's bolt and bolt carrier are made of steel.
A bolt.
The M16 assault rifle has a 7075 aluminium alloy receiver, steel barrel, bolt, and bolt carrier, and glass-reinforced polymer handguard, pistol grip, and buttstock.
uh well there completly different guns...the m16 is a assualt rifle and the l96 is a bolt action rifle. m16 is probly the better choice if your trying to survive on a battlefield.
the bolt will remain open
2 1/2 ounces
Yes. However, a used bolt face should not be used with any barrel other than the one it was originally mated with.
The bolt carrier, the firing pin, the carrier pin, the extractor, the cam pin, the bolt, the extractor retaining pin.... that's the assembly, but the charging handle is also defined as part of the bolt carrier group.
If you mean a bolt with a head size of 24mm (M16) then the recommended torque setting will be 210Nm but if you mean a head size of 36mm (M24) then the recommended setting will be 710Nm.
Upper Receiver: Bolt Carrier Group: Gas System Lower receiver: Trigger Group
It could be that your bolt is dirty or need to be lubed.
Lower Receiver AssemblyUpper Receiver AssemblyBolt and Bolt Carrier AssemblyMagazine Group Assembly
The M16 series may be different today, but during the Vietnam War on the last round (from either a 20 or 30 round magazine) the bolt and dust cover stayed open on the final shot. All you had to do was slap another magazine into the well and snap the bolt release button which slammed the bolt closed...then give the forward bolt assist (located on the right side) a quick strike with the heel of your shooting hand to ensure the old jungle rifle was ready to fire.