Slick Side Uppers

604 A1 Slab (Slick) Side Upper Receiver Stripped

Forged M16 Upper Receiver from USGI Contractor, Model 604 "Slick Side", Black Type 3 Hard coat Mil Spec Anodized 7075 T6 does not have M4 Feed Ramps, interior is dry film lube coated.

604 A1 Slab (Slick) Side Upper Receiver w/ M4 Ramps Stripped

Forged M16 Upper Receiver from USGI Contractor, Model 604 "Slick Side", Black Type 3 Hard coat Mil Spec Anodized 7075 T6 does have M4 Feed Ramps, interior is dry film lube coated.

604 A1 Slab (Slick) Side Upper Receiver Complete

Forged M16 Upper Receiver from USGI Contractor, Model 604 "Slick Side",  Black Type 3 Hard coat Mil Spec Anodized, 7075 T6 Aluminum,  A2 Barrel Extension, No M4 Feed Ramps, Assembled with new production rear sight.

604 A1 M4 Ramped Slab (Slick) Side Upper Receiver Complete

Forged M16 Upper Receiver from USGI Contractor, Model 604 "Slick Side", Black Type 3 Hard coat Mil Spec Anodized, 7075 T6 Aluminum, M4 Feed Ramps, Assembled with new production rear sight.

604 M-16A1 AR-15A1 Upper 1/12 No Handguards

Here is one of our favorite custom builds. We decided to try and rebuild the old school USAF 604. These are using a 20" .625 lightweight barrel with a 1/12 twist. The barrel is made of 41V50 steel and the chamber/bore is chrome lined. We have...

604 M-16A1 AR-15A1 Upper 1/7 No Handguards

Here is one of our favorite custom builds. We decided to try and rebuild the old school USAF 604. These are using a 20" .625 lightweight barrel with a 1/7 twist. The barrel is made of 41V50 steel, and the chamber/bore is chrome lined. We have...

Slick Side "640" 11.5 Commando Upper

Looking for a clone of the colt commando upper? Look no further! Our A1 commando clones are built with standards that are second to none using top tier materials. Our standard contour barrel features a pencil lightweight carbine barrel for long life and...

604 M-16A1 AR-15A1 1/12 Upper

Here is one of our favorite custom builds. We decided to try and rebuild the old school USAF 604. These are using a true 20" .625 pencil barrel with a 1/12 twist. The barrel is made of 41V50 steel and the chamber/bore is chrome lined. We have...

604 M-16A1 AR-15A1 1/14 Upper

Here is one of our favorite custom builds. We decided to try and rebuild the old school USAF 604. These are using a true 20" .625 pencil barrel with a 1/14 twist. The barrel is made of 41V50 steel and the chamber/bore is chrome lined. We have...

604 M-16A1 AR-15A1 1/7 Upper

Here is one of our favorite custom builds. We decided to try and rebuild the old school USAF 604. These are using a true 20" .625 pencil barrel with a 1/7 twist. The barrel is made of 41V50 steel and the chamber/bore is chrome lined. We have...

Legacy 5.56 "Colt" 654 Clone Upper 1/7 14.7" Barrel

HISTORY / BACKGROUND:This was the final "all A1 Component" Carbine Model in the Colt 600 Series, and the second carbine configuration built with a 14.5" barrel. This Carbine was primarily used by US Special Operations, to include the Army Rangers and...

Legacy 5.56 "Colt" 654 Clone Upper 1/7 16" Barrel

HISTORY / BACKGROUND:This was the final "all A1 Component" Carbine Model in the Colt 600 Series, and the second carbine configuration built with a 16" barrel. This Carbine was primarily used by US Special Operations, to include the Army Rangers and Navy...