M16G Sniper Rifle 2

There are several things that need to be taken into consideration when building a long-range AR. The first is that it is very difficult to mount a long optic far enough forward. For SDM work, some of the 1 - about 4x type optics solve this problem and fulfill that role perfectly. At 1x the optic works basically as a reflex sight. adjusting to a higher magnification allows more precision at for longer ranges or smaller targets. Companies such as Leupold, Schmit & Bender, Valdada IOR, Millett, and Burris make this type of optic. I have used the Leupold, which requires more precise eye relief and head placement than I like for this type of optic. I would not recommend it for a harder recoiling rifle, but for 5.56 it serves just fine. I have never used Schmitt & Bender’s Shot Dot, but from all I have heard it is a superior optic, with a corresponding price. Valdada’s IOR optics are very impressive. Clear, bright, and containing very well designed reticles, they are built like tanks. I used an IOR optic when deployed and preferred it to any of the others I used (mostly Leupolds). Both the 1-4x and the 1.5-8x optics are very nice and provide great flexibility to the SDM. Millett’s DMR-1, while not a Schmitt & Bender by any means, provides solid quality for the price. Optics are clear and it works well at all magnifications. There is slight distortion around the edges of the sight picture at the one power setting, but it does not interfere with function and disappears as soon as the magnification is increased. The Burris optic looks like it should work well, but I have not yet had the opportunity to test one. It seems that most of the optics with ballistic drop compensating reticles for the 5.56 are designed for the M855 or or cartridges with similar trajectories.
For dedicated long-range shooting, more traditional scopes usually work if mounted as far forward as possible in standard rings. The charging handle generally will end up under the scope in this case and an extended charging handle such as Badger Ordnance’s Tactical Latch makes operation easier. Backup iron sights will rarely fit under the scope and would require removal of the optic if they did. I would recommend a secondary sighting system such as a J-Point or Docter Optic reflex sight mounted to the scope instead.
Long optics can be moved forward if mounted in a purpose-built mount such as the LaRue Tactical SPR/M4 mount.
Mounting optics on a flat-top upper requires the use of high rings to get the necessary height, unless a riser rail of some type is used. I see no reason to use a riser for the sake of using a riser, but there are excellent risers that extend the length of the top rail. Many hanguard systems also have a top rail that attaches to the flattop rail. Some manufacturers also offer uppers with taller rails built in.

Design #1: M16 "G-Series" Assault RifleOverview: The M16 rifle has come full circle by 2010. After the failure of the ObjectiveIndividual Carried Weapon program (and a host of other pre-Iraq small arms), courtesy of Pentagonhubris, the Army carried out a new program of progressive design improvements upon the older M16architecture and ergonomics. First and foremost was the elimination of the unreliable gasimpingement system in favor of a conventional gas piston arrangement similar to that used on theTaiwanese T85K2 rifle (a near M16 clone), followed by the adoption of the 6.8mm SPC as thestandard infantry round. The new rifle incorporated the M16A4s "integrated modular system" thatenabled it to quickly exchange the regular architecture of barrels, and sights, and triggers formission specific items. The Block II rifles (introduced in 2012) were fitted with a concealedPiccatinny rail for mounting a telescopic or low light sight as part of its role as a SquadDesignated Marksman (SDM) rifle. All versions retained the older 3 round burst capability torestrict excessive ammo expenditure and control muzzle climb.The 'G' in the rifle designation refers both to its conventional gas piston mechanism, and toactual diameter of its ammo (G is the seventh letter of the alphabet).Weapon Stats: Nation of Origin: USA Tech Level: 8 Ammo: 7.03x42.54mm-8 Muzzle Energy: 2758 Joules Weapon Length: 102 cm Weapon Weight: 3.718 kg unloaded, 4.55 kg loaded Weapon Price: Cr 728 Magazine Weight: 0.337 kg empty, 0.832 kg loaded Magazine Price: Cr 3.4 Ammo Price: Cr 0.33 (Ball), Cr 0.66 (DS and HE) Ammo Weight: 16.51 Grams Features: Flash Suppressor/Compensator

Design #4: M16G Sniper Rifle Overview: The first of Eugene Stoner's weapons was the 7.62mm AR-10, a weapon that was too late inintroduction to create any kind of impact upon military procurement. The AR-15/Colt Model 703became the US Army's standard infantry weapon after 1962, and the bigger bore weapon slipped intonear obscurity. In the late 1980s, Stoner went to work for Florida-based Knight Armament Systems,and brought the AR-10 design with him. Though Stoner died in 1997, KAS continued to develop theAR-10 into a marksman weapon, and in 2003 SOCOM adopted the "M16 Sniper Rifle" as their standard.The abandonment of the OICW program and cancellation of the XM8 threw a wrench in these plans, andKnight quietly redesigned the rifle with a gas piston system in anticipation of DoD's changes.When the M16 "G" was introduced, Knight immediately submitted their redesign, and after a caliberchange to the 6.8mm SPC, became the Army standard sniper rifle in 2011. Weapon Stats: Nation of Origin: USA Tech Level: 8 Ammo: 7.03x42.54mm-8 Muzzle Energy: 3059 Joules Weapon Length: 114.2 cm Weapon Weight: 4.312 kg unloaded, 5.114 kg loaded with bipod Weapon Price: Cr 1191 Magazine Weight: 0.337 kg unloaded, 0.802 kg loaded Magazine Price: Cr 3.4 Ammo Price: Cr 0.33 (Ball), Cr 0.66 (DS and HE) Ammo Weight: 16.51 Grams Features: Flash Suppressor, Telescopic and Optic Sight, Bipod (1.47 kg)Rnd ROF Dam Val Pen Rtg Blk Mag Recoil Shrt Rng Ball SA 4 2-3-Nil 7 30 3 130w/Bipod SA 4 2-3-Nil 7 30 1 160DS SA 4 1-2-6 7 30 3 150w/Bipod SA 4 1-2-6 7 30 1 200HE SA 4 Nil 7 30 3 90w/Bipod SA 4 Nil 7 30 1 120