I'm not real knowledgeable when it comes to historically accurate guns, but here's my A1s. Just built them for fun. I love the carbine, it's very light with the pencil barrel.



Rifle has a Windham 20" barrel, surplus stock, handguard and grip. CDNN upper receiver.

Carbine is a CDNN upper, PK triangular handguard, RGuns stock and surplus speckled grip.

Very nice! Posted direct for you:

Nice!  I like 'em!

What is the barrel on your rifle? An HBAR?

Looks like a good shooter

Someone here recommended that barrel for a rifle build. Here's what the add says:

"A2 Gov't. Profile 20" Barrel Sub-Assembly for AR15 / M16.

This is the original A2 government profile 20" barrel - perfect as a replacement barrel, or for that service rifle build you've been planning. Barrel material is 4150 Chrome Moly Vanadium11595E Steel, and it is Chrome Lined in both Bore and Chamber for long wear and ease of cleaning. Button rifling is 1 turn in 7 inches - right hand twist for optimum accuracy with a wide range of .223 / 5.56mm ammunition. A Black Manganese Phosphate finished is applied for protection against rust and corrosion. This barrel is machine turned under the handguards to offer the lightest weight possible. It includes the Barrel Extension (with M4 Feed Ramps), Barrel Nut ,Front Handguard Cap, standard A2 Front Sight Base with Sling Swivel, and Bayonet Lug. The muzzle is threaded 1/2" x 28 T.P.I. to accept a variety of flash hiders or muzzle brakes. Includes a triangular Front Handguard Cap."

That is the M16A2 barrel. Not that stuff didn't get mixed six ways to Sunday by some Unit armorers anyway.

Replace the hand guards with A2 Rounds and you have a perfect C7 build to post in the A2 forum.
ETA; A2 grip also.