10/ 10 points
The projectile of the .22LR cartridge fits a barrel with a nominal
-inch diameter bore, while the .223/5.56 is designed
for a bore with the nominal diameter of .224.
, 10/ 10 points
Although Colt was the first main manufacturer of the AR-15/M-16
platform, at least in large quantities, the company was not all that
interested in selling them to the civilian market. For this reason,
some companies that contracted to Colt in the production of some
parts filled that demand.
n 10/ 10 points
In the AR9, or in ARs that have been converted to chamber the
9mm and .22LR cartridges, the gas system required for the AR-15 is
no longer needed, however, other adjustments to certain
components will need to be made.
, Q "forge shops" generally did not have the tooling required to
forge the uppers and lowers.
n 10/ 10 points
| I Leade
The 5.56 NATO chamber has a longer thana.223
Remington chamber to allow for the increased pressures in the 5.56
NATO cartridge.
n 10/ 10 points
"MIL-SPEC", which is short for "military specification", is the lowest
allowable standard for something to be accepted into the military.
, % Return
n 10/ 10 points
In general, the M4 differs from the M16 in that the M4 has:
D O Ashorter barrel.
() Abetter muzzle device.
O A different magazine mounting bracket.
() Adifferent bolt design.
u 10/ 10 points
The reason there are few "forge shops" that handle the AR market
is because:
O "forge shops" experienced widespread layoffs during the 1980s
and it has been difficult for them to recuperate from this.
O "forge shops" by and large did not want to deal with the
political repercussions of manufacturing these parts.
o other "forge shops" found that the AR work was a
marginal part of their business and their time and
resources were better spent elsewhere.
The projectile of the .22LR cartridge fits a barrel with a nominal
-inch diameter bore, while the .223/5.56 is designed
for a bore with the nominal diameter of .224.
, 10/ 10 points
Although Colt was the first main manufacturer of the AR-15/M-16
platform, at least in large quantities, the company was not all that
interested in selling them to the civilian market. For this reason,
some companies that contracted to Colt in the production of some
parts filled that demand.
n 10/ 10 points
In the AR9, or in ARs that have been converted to chamber the
9mm and .22LR cartridges, the gas system required for the AR-15 is
no longer needed, however, other adjustments to certain
components will need to be made.
, Q "forge shops" generally did not have the tooling required to
forge the uppers and lowers.
n 10/ 10 points
| I Leade
The 5.56 NATO chamber has a longer thana.223
Remington chamber to allow for the increased pressures in the 5.56
NATO cartridge.
n 10/ 10 points
"MIL-SPEC", which is short for "military specification", is the lowest
allowable standard for something to be accepted into the military.
, % Return
n 10/ 10 points
In general, the M4 differs from the M16 in that the M4 has:
D O Ashorter barrel.
() Abetter muzzle device.
O A different magazine mounting bracket.
() Adifferent bolt design.
u 10/ 10 points
The reason there are few "forge shops" that handle the AR market
is because:
O "forge shops" experienced widespread layoffs during the 1980s
and it has been difficult for them to recuperate from this.
O "forge shops" by and large did not want to deal with the
political repercussions of manufacturing these parts.
o other "forge shops" found that the AR work was a
marginal part of their business and their time and
resources were better spent elsewhere.
