5.56mm Designated Marksman Rifle variations:
M-16A4/M-4 (Base Rifle/Carbine with ACOG)
MK-12 Special Purpose Rifle
(US Navy photo:Petty Officer 2nd Class Eli Medellin, Combined Joint Special Operations Task Force)
USMC MK12 MOD1 Special Purpose Rifles
The USMC spent several years refining the concept of the Designated Marksmans Rifle. The June, 2003 Squad Advanced Marksman, Limited Technical Assessment presents the most through evaluation of the methods involved in selecting and configuring a Designated Marksmans Rifle published. In the end the USMC designed a variant of the SOCOM MK-12 Special Purpose Rifle.
The MK12 MOD1 Special Purpose Rifles is based on the fact that parts referenced in the MK12 technical data package (TDP) list are identified by specific part numbers from specific manufacturers. The Marine Corps’ MK12 is built by the Precision Weapons Section (PWS), Weapons Training Battalion. The TDP is owned by the Marine Corps, specifically Marine Corps Systems Command.
Task Force Liberty Soldiers from 3rd Infantry Division provide overwatch to an Iraqi police traffic control point in Tikrit, Iraq. US Army photo.
In 2004 the Army Marksmanship Unit produced a small number of modified M-16's to provide an increased Designated Marksman capablity to 3 ID. While their solution was viable and considered by many to be the best path forward, it never made it to broad adaptation. The following description is from documents from that time frame:
Weapon System Description. The USAMU prototyped the Designated Marksman Rifle using the same technology for building National Match M16 competition rifles. The USAMU Custom Firearms Shop removes the GI-issue chrome-lined barrel and replaces it with a heavy profile stainless steel match-grade barrel with 1-7 or 1-8 rifling twist. The barrel has twelve flutes machined into the portion of the barrel covered by hand guards or the for-end rail system to reduce weight. The front sight base is installed using Allen head screws vice drift pins to prevent barrel deformation and to provide windage correction when the iron sight on a standard M16A4 carrying handle is set to mechanical zero. The Modular Weapons System accessory rail is removed and a free-floating rail system is installed. Free-floating provides consistent shot-to-shot accuracy, as the barrel is not affected by sling tension, firing position changes, or vibration changes from bipod pressure. The free-float rails allow the Soldier to attach all standard accessories to the rifle, including optical, thermal, and Starlight sights; telescope; Aim point; the AN/PEQ-2 Target Illuminator/Pointer, and the AN/PAQ-4 Infrared pointer. The standard M203 will NOT mount to the free-float rail (this requires a USSOCOM rail quick-attach M203). The USAMU provides a modified Harris bipod with quick-detach hardware to fit on the accessory rail. The standard blank adaptor fits the GI muzzle compensator.
Photo Credit Knight's Armament
SR15E3 IWS LPR – The KAC Lite Precision Rifle (LPR) is the answer for 5.56mm shooters who want a light match system. The LPR utilizes an 18” Match Stainless Steel barrel with a Custom Match chamber, along with our IWS lower. Shooters will find that this weapon system offers a capable Competition System or Precision Perimeter Weapon for the Law Enforcement Sector.
Photo Credit LaRue Tactical
LaRue Tactical OBR 5.56 Overview:
Building off the success of our highly-accurate and reliable OBR 7.62, we set out to apply the same proven design features into a 5.56 rifle. The result is a lightweight, and reliable, tack driver that remains cool…even after high-rates of fire. The barrel and barrel nut does not touch the handguard at any point, so there is very little heat-transfer to your support hand. Like its 7.62mm sibling, both the upper and lower are CNC-machined from billet 7075-T6, for the optimum fit and consistency...translating into maximum accuracy. Even though this is a complete rifle, the upper will fit to any Mil-Spec AR15/M16 type lower.
Photo Credit Daniel Defense
AVAILABLE TO LAW ENFORCEMENT PERSONNEL ONLY
The DMP comes equipped with an 18" Cold Hammer Forged, S2W® (Strength to Weight), Salt Bath Nitride Finished barrel. It includes our highly sought-after Modular Float Rail 12.0 and has a 3.5-10x40mm Leupold Mark 4 LR/T rifle scope as a primary optic, and MAGPUL MBUS® Flip-Up Front and Rear backup sights. This package is an outstanding tool for target identification, surveillance, perimeter security and sniper over watch applications and comes with a Bobro Engineering QD Bipod.