The lower section of AR can be called as
the rifle’s commanding centre. It basically consists of three systems of parts
that work together for storing and feeding ammunition; reducing and controlling
recoil; cycle the bolt carrier group; and finally, operating the safety,
trigger, hammer, and disconnector for semiautomatic fire.
To name those three systems are
Stripped lower receiver
Lower Parts – Kits and Trigger
Buffer Assembly
Let’s take a closer look at some of the
lower parts kit. This includes primarily the fire control group and is
responsible to perform the most important functions of the AR-15. It releases
the hammer, striking the firing pine. Further, it disconnects the hammer,
allowing the trigger to reset. The shooter is allowed to select safe or fire
and it's responsible for catching and releasing the magazine and bolt.
AR-15 Carbine Length Buffer Spring - Steel
The buffer retainer rests at the rear of
the lower receiver, inside the buffer tube housing and threads. The sole job
here is to prevent the recoil spring and buffer from decompressing and to let
it fly out of the tube every time the receivers are separated. The carbine
buffer springs are made of quality metal and available in different weight
options.
Castle Lock Nut
The buffer assembly has a castle nut for
tightening the tube to the lower receiver. Quality castle lock nuts have
Precised machined surfaces and non-sharp edges to ensure proper threading.
Trigger Guard
The trigger is that button which releases
the hammer when cocked, allowing it to fly up and strike the firing pin and
ignites round in the firing chamber. The trigger comprises the trigger spring
the top-rear shelf for the disconnector spring and the sear. One such trigger
part is AR-15 Aluminum Extended Trigger Guard Assembly that has a new
reversible design for easy trigger access when the shooter is wearing gloves or
simply needs extra space. It is quite easy to install with 3 included screws
and Allen wrench.
Takedowns and Pivot Pins
The pivot and takedown pins are required
in AR's upper and lower receiver assemblies secured to each other. Both these
pins are permanently installed at the front and rear of the lower receiver, trapped
in place by spring-loaded detents. Pulling on a takedown pin on the rear end
allows one to access the fire control group and also help in troubleshooting.
On the other hand, pulling the front pivot pin allows for the complete
separation of the upper and lower receivers.
Swivel Socket Mount
Another important component of AR is the
Sling-End Plate Quick-Detach Swivel Socket Mount that helps in staking.
Silent Buffer Assembly Spring
This lower AR part is a drop-in recoil
system designed to help the AR-15 platform function more smoothly and quieter.
The carefully balanced, the all-in-one system has easy installation and quickly
reduces friction and vibration. Not just that it comes with much smoother
harmonics than traditional buffer systems.
Conclusion:
That is not just it. There are several
other AR lower parts that include Sling-End Plate Quick-Detach Swivel Socket
Mount, 45/90 Safety Selector, Bolt Catch Assembly Kit with Plunger, Spring
& Roll Pin, etc. Explore more at mcsgearup.com – Your one-stop online
destination for Tactical Gear, Optics and Firearm
Accessories all available at affordable prices.
An Expert Guide to AR-Lower Parts
Jul 20th 2020