USEC Deep Weapon Modding

USEC Deep Weapon Modding is a USEC skill in Escape from Tarkov.

Description
Because the ARMALITE model AR-15 is the same gun as a COLT M4 externally (with exception of spent casings being blocked behind a mild in the new upper receiver) and the upper receiver on the "COLT" M4a1 uses a gas tube that diverts gas propulsion from the barrel to the opposite direction lining up with the BoltCarrierGroup(BCG), which is what makes the COLT model of the AR-15 different from any other AR platform made by say Sig Sauer, H&K, COLTCANADA/DIMEACO, or models like the PDW(AR-Personal Defense Weapon) and others. This is because instead of using a gas tube (which can be tweaked to modify ROF and reliability issues) which gets extremely hot very fast especially when youre firing full auto. Heat shields have been a standard thing in all handguards made by COLT and their m16/m4 variants where as counterparts like H&K inquire a piston operated recoil system just like the AK47/74 except instead of one piston it uses a two stroke piston. This allows these guns to rarely need maintenance compared to COLT's old model. Instead of hot ventilated combustion gases traveling from the front sight post to your chamber - a piston simply moves back into a spring from barrel pressure and the centrifugal force keeps the piston in content movement without the tube breaking. This is why AR's like H&K are able to successfully fire both semi and automatically after being submerged in water so it goes to ever nook and cranny a regular M4 would need to have regularly maintained gun lubricant and not be affected. The COLT-CANADA has created a stroke piston operated select fire military rifle called the C7a1 (semi/F.A. M16 equivalent) and the C8 carbine (also knows to JTF2 as C8-SFW; just as USEC spec Ops would call it the M4a1"SOPMOD".

Because of how versatile and almost universal the AR platform is - there is nothing that cannot be accessorized, increased, changed, or swapped for preference.