5.56x45mm Rock Island Ammo for Sale

Price History
5.56x45mm
Rock Island
Armscor FAC2231N .223 Remington 55gr Full Metal Jacket – 20 Rounds - 1000 Rounds
55 Grains 1,000 Rounds Brass New
UPC 812285020136 $5 Off - Use Code CALIBERKING
53.0¢/rd $530.11 Gun Place ★★★★★ (206)
Armscor FAC2231N .223 Remington 55gr Full Metal Jacket – 20 Rounds - 80 Rounds
55 Grains 80 Rounds Brass New
UPC 812285020136 $5 Off - Use Code CALIBERKING
53.8¢/rd $43.06 Gun Place ★★★★★ (206)

5.56x45mm Rock Island Ammo Price Graph

Today's 5.56x45mm Rock Island Ammo average is 54.9¢/rd, 3% above the 180-day average of 53.2¢/rd. Over the last 180 days, the average peaked at 56.1¢/rd on May 1, 2026 and bottomed at 47.6¢/rd on May 10, 2026.

Armscor FAC2231N .223 Remington 55gr Full Metal Jacket – 20 Rounds
55 Grains 20 Rounds Brass New
UPC 812285020136 $5 Off - Use Code CALIBERKING
54.7¢/rd $10.93 Gun Place ★★★★★ (206)
ARMSCOR .223 Remington 55gr PSP – 20 Rounds - 1000 Rounds
55 Grains 1,000 Rounds Brass New
UPC 812285021898 $5 Off - Use Code CALIBERKING
55.2¢/rd $551.93 Gun Place ★★★★★ (206)
ARMSCOR .223 Remington 55gr PSP – 20 Rounds - 80 Rounds
55 Grains 80 Rounds Brass New
UPC 812285021898 $5 Off - Use Code CALIBERKING
56.1¢/rd $44.84 Gun Place ★★★★★ (206)
ARMSCOR .223 Remington 55gr PSP – 20 Rounds
55 Grains 20 Rounds Brass New
UPC 812285021898 $5 Off - Use Code CALIBERKING
56.9¢/rd $11.38 Gun Place ★★★★★ (206)

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5.56x45mm Rock Island Ammo Price Graph

Today's 5.56x45mm Rock Island Ammo average is 54.9¢/rd, 3% above the 180-day average of 53.2¢/rd. Over the last 180 days, the average peaked at 56.1¢/rd on May 1, 2026 and bottomed at 47.6¢/rd on May 10, 2026.

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Products at their 90-day low price.

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