Colt SP1 - The Original AR
The quickly evolving SP1 AR15 - Is it that different from modern AR15's?
1975 Colt SP1 AR-15 one of the earliest available AR's.
Colt Sporter SP1 AR-15 Variant Overview (HD)
COLT SP1 vs RUGER AC556 (YES THE REAL ONE!) - The Proving Ground
Colt SP1 Vs Colt AR15-A2
The Iconic Ar-15 Colt Sp1: The Ultimate American Rifle!
Yeah, the AR15 is Now Becoming C&R Eligible
Colt's SP1 AR15 - The Original Modern Sporting Rifle
1974 Colt SP1 Carbine #1
Colt SP1: Overview and Shooting
Colt SP1 AR-15 Carbine
Colt AR15 SP1 the rifle that started it all, in Episode 12 of This Old Gun
Colt AR-15 SP-1 Shooting This Classic Rifle - Why You Should Own The Original 'Black Rifle'
Colt SP 1 Project Complete
The Colt AR-15 Sporter I Series Evolution
The Colt Coltguard AR15 SP1
Colt SP1 Carbine
Colt SP1 AR15
Colt 607: The First AR Carbine