The rifle in question is a modified M-14.
The rifle was developed for the D.M. program for shorter range use by F.A.S.T. CO.Marines,thanks to the issue of the M40A1 being a dedicated long range weapon,and the need for fast,accurate second shots in the role of active counter terrorism.
The suppressor used is of the "Wet" variety,which uses no wipers,and is quite effective,although small and light.
Accuracy is outstanding for the package.
The only drawback is the mess!!!!
The rifle uses a "Double lug" receiver that is added at 3rd echilon by 2112 match armourers to an existing M14 receiver.
Optics used are "Usually" the Vari-X III LR.M3 leupold.Others exist and are used.
The variable power allows a wider field of view during M.O.U.T. operations than the M40's Unertil fixed 10X.
It's a great system,but still lacking.
I got in on the ground floor of the DM program,and we had all sorts of issues,and nightmares with getting attention to our need for a specialized rifle system.
The D.M rifle will use the same ammo as the M-40 so it would seem logical for both the DM program AND for a spotters rifle.
But it is NOT!
Back in the day we found the 16A2 with either the Colt 4X(like looking through a straw!)or a privately purchased ACOG. was just as accurate out to 600m,weighed less,and had the option of protective full auto fire.
The M14 based D.M.rifle was limited by the amount of ammo(Weight)carried,and controll issues on rapid fire/Full auto(Don't get caught with your lever on the thing!).
From what I hear from buds still active,the M4 fitted with an ACOG is the spotter rifle of choice these days,and the D.M. rifle is on the way out with the realization of the accuracy potential illustrated by the Marine rifle team using heavy bullets in modified 16A2's.
The evolution will continue I hope.
The fact the "Cans" are on these rifles suggests some hunting might be underway at night in urban areas....
I wish them luck,lots of safe shooting,and a safe return.
Semper FI
Sierra-28