FTE 217 | Questions with 100% Verified Answers | Latest Update
Question: In the AR9, or in ARs that have been converted to chamber 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.
Answer:
the True
Question: The flange on the firing pin of a semi-automatic only firing pin measures at:
Answer:
.330"
Question: The projectile of the .22LR cartridge fits a barrel with a nominal _________________-inch
diameter bore, while the .223/5.56 designed for a bore with the nominal diameter of .224.
Answer:
.221 is
Question: "MIL-SPEC", which is short for "military specification", is the lowest allowable standard for
something to be accepted into the military.
Answer:
True
Question: The problem with the AR platform, as it relates to gunsmithing, is that few manufacturers still
make the small components used in its construction. This would include items like the forward assist,
dust cover, and trigger. This creates a powerful bottleneck, especially when supply issues occur, as seen
during the COVID-19 pandemic.
Answer:
False
Question: The reason there are few "forge shops" that handle the AR market is because:
Answer:
other "forge shops" found that the AR work was a marginal part of their business and their time and
resources were better spent elsewhere.
Question: The 5.56 NATO chamber has a longer than a .223 Remington chamber to allow for the
increased pressures in the 5.56 NATO cartridge.
Answer:
throat
, Question: 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.
Answer:
true
Question: In general, the M4 differs from the M16 in that the M4 has:
Answer:
A shorter barrel.
Question: The problem with the AR (AR-15, AR-10, and AR9) platform is that all of the components, no
matter how small they are, are purpose-built and you cannot source them from anywhere else, other than
from an authorized dealer.
Answer:
False
Question: Generally, the selector is installed in the lower receiver prior to the trigger.
Answer:
False
Question: According to the reading material this week (i.e. gas port location and not ATF regulation),
rifle length barrels are inches long.
Answer:
20
Question: When installing the pistol screw, it can be easy to cross-thread it if it's not properly guided into
the threads.
Answer:
grip
Question: A piston-driven AR does not get hot.
Answer:
False
Question: The cons of a piston-driven AR system might include the following (select all that apply):
Answer:
Increased weight
Question: In the AR9, or in ARs that have been converted to chamber 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.
Answer:
the True
Question: The flange on the firing pin of a semi-automatic only firing pin measures at:
Answer:
.330"
Question: The projectile of the .22LR cartridge fits a barrel with a nominal _________________-inch
diameter bore, while the .223/5.56 designed for a bore with the nominal diameter of .224.
Answer:
.221 is
Question: "MIL-SPEC", which is short for "military specification", is the lowest allowable standard for
something to be accepted into the military.
Answer:
True
Question: The problem with the AR platform, as it relates to gunsmithing, is that few manufacturers still
make the small components used in its construction. This would include items like the forward assist,
dust cover, and trigger. This creates a powerful bottleneck, especially when supply issues occur, as seen
during the COVID-19 pandemic.
Answer:
False
Question: The reason there are few "forge shops" that handle the AR market is because:
Answer:
other "forge shops" found that the AR work was a marginal part of their business and their time and
resources were better spent elsewhere.
Question: The 5.56 NATO chamber has a longer than a .223 Remington chamber to allow for the
increased pressures in the 5.56 NATO cartridge.
Answer:
throat
, Question: 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.
Answer:
true
Question: In general, the M4 differs from the M16 in that the M4 has:
Answer:
A shorter barrel.
Question: The problem with the AR (AR-15, AR-10, and AR9) platform is that all of the components, no
matter how small they are, are purpose-built and you cannot source them from anywhere else, other than
from an authorized dealer.
Answer:
False
Question: Generally, the selector is installed in the lower receiver prior to the trigger.
Answer:
False
Question: According to the reading material this week (i.e. gas port location and not ATF regulation),
rifle length barrels are inches long.
Answer:
20
Question: When installing the pistol screw, it can be easy to cross-thread it if it's not properly guided into
the threads.
Answer:
grip
Question: A piston-driven AR does not get hot.
Answer:
False
Question: The cons of a piston-driven AR system might include the following (select all that apply):
Answer:
Increased weight
