QUOTE (roninn @ Jul 13 2006, 11:22 )

Optiska riktmedel, handgrepp under främre handskyddet, ficklampor, laserpekare utbytta pistolgrepp mot mer ergonomiska, andra vapenremmar.
Väldigt många har överdelar på vapnet där det traditionella handtaget på m16 serien vanligtvis sitter ersatta med en överdel som har en rail för diverse sikten mm. Många har helt andra främre handskydd med integrala rails både på undersidan, sidorna och ovanpå.
Enl world.guns.ru så har modell M16A3 denna grej:

Enl
http://en.wikipedia.org/wiki/M16_(rifle)QUOTE
M16A3
The M16A3 was a fully-automatic variant of the M16A2 adopted in small numbers around the time of the introduction of the M16A2, primarily by the U.S. Navy for use by the SEALs. It features a Safe-Semi-Auto (S-1-F) trigger group like that of the M16A1.
Some confusion continues to exist regarding the M16A3. It is often described as the fully-automatic version of the M16A4. Descriptions of the M16A3 that claim that it shares the M16A4's Picatinny rail are incorrect. This misunderstanding most likely stems from the usage of the A2 and A3 designations by civilian manufacturers to differentiate between A2-style fixed carry handles and Picatinny rail versions.
M16A4
M16A4 MWS. Shown on top, from left to right: AN/PEQ-2 infra-red laser and illuminator; M68 CCO red dot sight; AN/PVS-4 night sight, and the carry handle/sight combination. Starting at left on the bottom and moving counter-clockwise: handguards in various lengths, the M203A2 grenade launcher, the M203 quadrant sight, a vertical grip, and the M203 leaf sight.
The M16A4, now standard issue for frontline U.S. Army and U.S. Marine Corps units, replaces the combination fixed carry handle/rear iron sight with a MIL-STD-1913 Picatinny rail, allowing for the rifle to be equipped with a carry handle and/or most military and consumer scopes or sighting systems. All of the U.S. Marine Corps' M16A4s are equipped with a Knight's Armament Company M5 RAS handguard, allowing vertical grips, lasers, tactical lights, and other accessories to be attached. U.S. Army M16A4s also often feature the KAC M5 RAS. In U.S. Army Field Manuals, M16A4s fitted with the RAS are sometimes referred to as M16A4 MWS or Modular Weapon System. This model retains the 3-round burst mode of the M16A2.
Från en annan wikipedia-sida (http://en.wikipedia.org/wiki/Comparison_of_the_AK-47_and_M16)
QUOTE
Modern day variants of the M16 are the M16A3 and M16A4 rifles, which now are built with picatanny rails which allow soldiers to easily attach scopes, red dots, and carrying handles. They also accompany a rail system as the fore-grip which is produced by Knights Armament Company. The weapons are now capable of being customized to each soldiers preference, making it a Modular Weapons System.
Från
http://www.enemyforces.com/firearms/m16.htmQUOTE
The M16A3 automatic rifle is intended for all types of forces including special forces. It resembles design of the M16A2. The main difference between these two rifles is a multipurpose accessory rail on the M16A3 instead of the rifle's carrying handle. Although it do not prevents from using a carrying handle mounted on top of the rails.
Då wikipedia är uppbyggt så att "vem som helst" kan ändra så tror jag på att M16A3 har löstagbart handtag.