Heartbreak Ridge

The guns seen in this movie are:

M16 (AR-15/SP1)

In many scenes, the flat 'slab side' upper receiver of the original M16 (AR-15/SP1) rifle is seen. Some of them appear to be genuine civilian AR-15/SP1s and aren't seen fired full-auto. Instead, M16A1s seem to be used to depict full-auto fire. That is, until the Grenada sequence, when the Recon platoon's weapons are both M16A1s and M16 rifles, possibly AR-15/SP1's converted to fire full-auto, perhaps to to a lack of enough M16A1 rifles for those scenes.

M16 (AR-15/SP1) 5.56x45mm

Recon Marines in training fire their M16s down range, although they are likely AR-15/SP1s, as they aren't seen firing full-auto until in Grenada, when more full-auto guns were required. One marine fires his weapon full-auto during the rifle training, but it is clearly an M16A1.

Gunnery Sgt. Highway (Clint Eastwood) shows his recruit his AR-15/SP1 is not "Fuckin' fucked up."

What's the language limits of this site? Just to be sure.

Pvt. "Stitch" Jones (Mario Van Peebles) with his AR-15/SP1 while Highway hassles him over pawning his kevlar helmet.

Highway with his AR-15/SP1 in Grenada. This one appears to be converted to full-auto or it could be an actual M16 fitted with an A1 birdcage muzzle break, but it's a bit less likely.

Lt. Ring with the AR-15/SP1 in Grenada, his also featuring full-auto fire, making it a possible M16 with a birdcage muzzle break as well.

M16A1

Seen in the hands of several Recon Marines, used when a fully-automatic weapon is required early in the film, until Grenada when possibly all the weapons were converted to full-auto fire, perhaps do to a lack of M16A1s.

File:M16A1 brimob.jpg

M16A1 5.56mm

Highway pulls a Marine's M16A1 out of his face when he complains about his weapon malfunctioning, nearly getting his head blown off. The weapon empties a full magazine, almost killing the other men on the firing range.

A Marine in Grenada with his M16A1.

Lance Corporal Fragatti, nicknamed "Fagetti", empties a mag from his M16A1 into a skeleton model from a classroom in Grenada.

Cpl. "Stitch" Jones, now armed with an M16A1 in Grenada.

Cpl. Ring is seen using an M16A1 after taking the hill, a possible continuity error, since he was using an AR-15/SP1 rifle earlier.

M60E1

Used by Recon Marine Private Johansson "The Swede", Used inside an armored vehicle by the Cubans, and seen on the helicopter that picks up the Recon men after the operation is complete.

M60E1 machine gun 7.62x51mm NATO

Johansson "The Swede" gives supporting fire with his M60E1.

"The Swede" walks with the rest of his men to the hill, somehow comfortably holding the 23lb M60E1 with one hand. Perhaps it was lightened for the film or perhaps he really is strong enough to hold it like that.

"The Swede" climbs the hill with his M60E1.

A Cuban soldier fires an M60E1 out of the armored vehicle.

The Helo that picks up the Recon Marines is fitted with a door mounted M60E1.

AKM

Used by Cuban soldiers in Grenada and by Sergeant Highway in training.

File:IMG 7046.JPG

AKM, Stamped Steel Receiver w/ slant muzzle brake 7.62x39mm