SP1 — specifications, caliber, stats, review, photos | WeaponAtlas
SP1 is a semi-automatic rifle in .223 Remington introduced in 1964 as a civilian version of the early AR-15/M16 pattern. The base model is characterized by a 20-inch barrel, an upper receiver with integral carry handle, and triangular handguards.
| Manufacturer | Colt's Manufacturing Company |
|---|---|
| Year introduced | 1964 |
| Caliber | .223 Remington |
| Length | 997 mm |
| Barrel length | 508 mm |
| Magazine capacity | 20 rounds |