Sig 551-A1 Rifle R551A1F16BCRD,223 Remington/5.56 NATO, 16 in, Swiss Folding
Stock, Black Finish.
Sig Sauer is offering several variants to its tactical platforms. The Sig551-A1
is chambered for the widely used 5.56 x 45mm NATO caliber using Swiss Polymer
magazines. It features a distinctive swiss folding stock, and a M1913 rail for
accessory attachment. The 16 in barrel features a four-grove rifling and a twist
rate of 1:7 in . The SIG551-A1 measures 36.1 in but can fold to 26 in , making it
ideal for situations where maximum maneuverability is required. For Special Forces
requiring an accurate, more potent rifle, chambered in 5.56 x 45mm NATO.
Features :
- 5.56 x 45mm NATO caliber
- Swiss Polymer magazines
- Swiss folding stock
- M1913 rail
- 16 in barrel
Specifications :
- Mfg Item Num: R551A1F16BCRD
- Category: FIREARMS - RIFLES
- Action: Semi-Automatic
- Caliber: 223 Remington/5.56 NATO
- Barrel Length: 16 in
- Capacity: 20/30
- Trigger: Two Stage
- Safety: Ambidextrous
- Length: 36.1 in
- Weight: 7 lbs
- Stock: Swiss Folding
- Finish: Black
Caliber Dictionary
The Below Information Has Been Provided From Our Gun Caliber Dictionary And Is Meant For Informational Purposes Only. It Is Not Intended to Describe The Unique Specifications For This Ammunition.
The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles. — Craig Boddington
