Rock Island 51487 Rock Ultra MS 45 ACP Caliber with 4.25" Barrel, 8+1

UPC 4806015514879 from 52 retailers

  • .45 ACP
  • Rock Island
  • New
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Rock Island 51487 Rock Ultra MS 45 ACP Caliber with 4.25" Barrel, 8+1

Price History
ARMSCOR ROCK SERIES - The Rock Island M1911 A1 MS-Tact-II is a semi-automatic pistol chambered in .45 ACP. It features a 4-inch barrel and a standard magazine capacity of 8 rounds plus one in the chamber. The pistol is finished in black on the frame, complemented by gray g...
Armscor Used
Shipping $20
$499.99 Guns.com ★★★★★ (38,455)
Rock Island Armory M1911A1 MS Tact II .45 ACP Pistol
$517.99 Good 4 Guns ★★★★★ (276)

UPC 4806015514879 Price Graph

  • Today's low of $499.99 is cheaper than 29% of daily lows in the last 180 days.
  • Today's average of $594.72 is more expensive than 94% of daily averages in the last 180 days.
  • The low peaked at $530.99 on June 24, 2026 and bottomed at $499.99 on October 23, 2026.

Rock Island Armory 51487 Rock Ultra M1911 A1 MS 4.25" 45ACP 8+1 Black/G10 Grip
Free Shipping
$523.99 Cummings Family Firearms ★★★★★ (52)
Rock Island 51487 Rock Ultra MS 45 ACP 4.25" 8+1 Black Parkerized Gray G10 Grip
$531.80 Gun Wise
ARM 1911A1MS TACII 45AP 4PRK
CC Fee 3%
$543.99 Cornerstone Arms ★★★★★ (373)
Rock Island Armory Rock Ultra MS 1911 .45 ACP 4.25"
$544.31 Georgia Guns & Ammo ★★★★★ (2)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
CC Fee 6%
$545.85 All Things Firearm ★★★★★ (3)
Rock Island Armory 1911 Rock Ultra 45 ACP 4.25" Pistol, Mid Size - 51487
Shipping $20
$553.92 Classic Firearms ★★★★★ (2,454)
RIA 1911 ROCK ULTRA 45 ACP MID SIZE 4.25 VZ
Free Shipping > $900 CC Fee 3% $10 Off Code CALIBERKING
$554.48 Armed in Michigan ★★★★★ (714)
Rock Island Rock Ultra MS Tac II 45 ACP 4.25in 8 rd
Free Shipping
$559.57 Axolotl Arms ★★★★★ (126)

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ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
$562.92 Ecommerce Arms
Rock Island 45ACP 1911A1 4.25" TacII 8rd
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$564.66 Timber Hole Outdoors ★★★★★ (6)
Armscor Rock Island Rock Ultra MS 1911 Pistol 45 ACP 4.25 in 8 Rounds Parkerized
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Free Shipping
$567.20 Shooting Surplus ★★★★★ (193)
Rock Island Armory M1911-A1 MS Tac II .45 ACP Pistol
$572.35 Ferrari Firearms
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Shipping $19 Free Shipping > $750
$575.00 Riddle Firearms
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$575.00 MCM Tactical ★★★★★ (60)
ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
Shipping $16
$576.99 Riflenetics ★★★★★ (65)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Free Shipping > $700
$577.65 Safe Haven Defense
RI Armscor M1911-A1 MS Tac II Handgun 45Auto 8rd 4.25" Barrel Parkerized G10 Grips
Free Shipping
$578.99 Canoe Creek Armory ★★★★★ (17)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$582.28 The Arsenal Project ★★★★★ (16)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Shipping $20
$582.95 Custom Creatives Group ★★★★★ (24)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$585.00 Allied Arms ★★★★★ (310)
ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
$5 Off Code CALIBERKING
$586.82 Gun Place ★★★★★ (206)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Free Shipping > $1,000 CC Fee 3%
$587.55 Bunker Hill Ballistics ★★★★★ (9)
RI Armscor M1911-A1 MS Tac II Handgun 45Auto 8rd 4.25" Barrel Parkerized G10 Grips
Shipping $18
$593.54 Sharp's Shooting Supply ★★★★★ (34)
Rock Island 51487 Rock Ultra MS 45 ACP Caliber with 4.25" Barrel, 8+1 Capacity, Overall Black Parkerized Finish Steel, Beavertail Frame, Serrated Slide & Black/Gray G10 Grip
$594.00 Birmingham Hill Armory ★★★★★ (16)
RI Armscor M1911-A1 MS Tac II Handgun 45Auto 8rd 4.25" Barrel Parkerized G10 Grips
$595.00 Highland Arms ★★★★★ (49)
Rock Island 51487 Rock Ultra MS 45 ACP Caliber with 4.25" Barrel, 8+1 Capacity, Overall Black Parkerized Finish Steel, Beavertail Frame, Serrated Slide & Black/Gray G10 Grip
$596.15 Black Bayou Armory ★★★★★ (83)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$599.99 Pathfinder Militaria ★★★★★ (106)
ROCK ISLAND ROCK ULTRA 45ACP 4.25" 8
$600.99 WTW Arms ★★★★★ (68)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Free Shipping
$604.00 Garrison's Guns ★★★★★ (21)
RIA 1911 ROCK ULTRA 45 ACP MID SIZE 4.25 VZ
$604.99 2 If By Sea Tactical ★★★★★ (135)
ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
Shipping $20 Free Shipping > $1,000
$609.44 Life2A ★★★★★ (3)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$609.99 Big Bee Bee ★★★★★ (11)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$617.99 Precision Gunworks
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Free Shipping
$619.99 Timberlake Firearms ★★★★★ (11)
Rock Island Rock Ultra MS - 45ACP 4.25" AS 8rd Parkerized
Free Shipping
$622.40 Hollow Point Arms ★★★★★ (8)
Rock Island Armory 51487 Rock Ultra M1911 A1 MS 4.25" 45ACP 8+1 Black/G10 Grip
Free Shipping $15 Off Orders $75+ Code CALIBERKING
$622.99 Brickhouse Firearms
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Shipping $18
$625.34 Blackbox Ballistics ★★★★★ (2)
Armscor Rock Island 45ACP 1911A1 4.25" TacII 8rd
Armscor
Free Shipping
$625.99 BuyAGun ★★★★★ (3)
ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
Free Shipping
$629.72 Lightning Strike Arms ★★★★★ (32)
Rock Island Armory 51487 Rock Ultra M1911 A1 MS 4.25" 45ACP 8+1 Black/G10 Grip
Shipping $25 $25 Off Orders $200+ Code LOCKNLOAD25
$633.24 Scottsodg.com
ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
$635.38 Redsand Tactical
Rock Island ROCK Ultra MS 4806015514879 45 Auto (ACP)
$638.99 C-ME Firearms
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$639.00 EK Tactical ★★★★★ (10)
Rock Island Rock Ultra MS 1911 Pistol 45 ACP 4.2 in. Black Parkerize 8 rd.
$640.54 Tungsten Creek Tactical
ROCK ISLAND ARMORY M1911A1 MS TACT II 45ACP 4.25"
$651.53 Utah Fast ★★★★★ (101)
Rock Island Rock Ultra Ms - 45 ACP 4.25" As 8RD Parkerized
$657.18 Shiner Tactical ★★★★★ (6)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
Free Shipping
$657.26 Conkey's Outdoors ★★★★★ (175)
Rock Island Armory 51487 Rock Ultra M1911 A1 MS 4.25" 45ACP 8+1 Black/G10 Grip
Free Shipping
$661.31 Kinetic Armory ★★★★★ (3)
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$681.99 Coastal Firearms
ROCK ISLAND ROCK ULTRA MS - 45ACP 4.25" AS 8RD PARKERIZED
$693.40 Bulletproof Outfitters ★★★★★ (133)

UPC 4806015514879 Price Graph

  • Today's low of $499.99 is cheaper than 29% of daily lows in the last 180 days.
  • Today's average of $594.72 is more expensive than 94% of daily averages in the last 180 days.
  • The low peaked at $530.99 on June 24, 2026 and bottomed at $499.99 on October 23, 2026.

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