SP1 — specifications, caliber, stats, review, photos | WeaponAtlas
SP1 is a semi-automatic rifle chambered in .223 Remington, introduced in 1964 as Colt’s commercial AR-15. Early rifles are characterized by a 20-inch pencil barrel, fixed carry handle, and triangular handguards.
| Manufacturer | Colt's Manufacturing Company |
|---|---|
| Year introduced | 1964 |
| Caliber | .223 Remington |
| Length | 997 mm |
| Barrel length | 480 mm |
| Magazine capacity | 20 rounds |