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HSS Corp Hammer Strut Support for Ruger MK HSS-01

08:04
HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01
HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01
1 of 1 videos
HSS Installation Video
HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01
1 of 2 images
HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01
HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01
2 of 2 images
HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01

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Questions & Answers
Customer Reviews
Most Recent Reviews
Worth every penny....!!! by Wit, Verified Owner, June 14, 2025
I have 4 Ruger Mark II. 3 of them are my kids' and I'm the care taker of the gun because I'm the dad. Cleaning them is more than a challenge, a fear perhaps that I won't be able to put them back together. Re-assembling the gun require additional hand...
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Most Recent Reviews
Highly recommended. Easy to install. Does what it claims to do perfectly. by Richard, Verified Owner, September 2, 2024
I have over the years installed this HSS Corp. Hammer Strut Support on two of my Ruger Mark II .22 caliber target pistols. They are not at all difficult to install. The instructions that the HSS Corp. provides in its on-line videos are clear and co...
Read More...
Most Recent Reviews
HAMMER STRUT FOR RUGER MK 11 by STASH, April 30, 2024
GREAT PRICE ON THIS PART TO HELP IN NOT HAVING PROBLEMS AFTER CLEANING & REASEMBLING THE RUGER PISTOL.
0/1 found this helpful
Read All 3 Reviews

Product Discontinued by Manufacturer

HSS Corp Hammer Strut Support for Ruger MK has been discontinued by HSS Corp and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, Pistol Parts yourself to try and find the perfect replacement for you!

Product Info for HSS Corp Hammer Strut Support for Ruger MK

Finally, a solution to easily reassemble Mainspring Assembly into Ruger MK pistols. This patented item makes reassembly-quick, easy, and ALWAYS CORRECT. This ONE-TIME FIX is simply an assembly aid that remains in the pistol. After installation, it does not touch any moving or functioning part of the pistol. Hammer Strut Support (HSS) ensures reinstallation of mainspring assembly into Ruger MK pistols, quickly, easily and correctly every time. No other product even claims to do this. HSS is compatible with ALL factory and aftermarket pistol parts and accessories.image

After removing the grips, the Hammer Strut Support(R) (HSS) easily installs in a few minutes and remains in the handle. No special tools or experience needed. The hammer strut will never again get lodged under the cross-pin in the handle.

For Ruger Mark 3, Ruger Mark 2, Mark 1 and Standard models except:

Will not fit 22/45 version of any model

Not for Mark I, serial # 334991 and above

Not for Mark I, serial # 10-58067 to 13-49225

Features of HSS Corp Hammer Strut Support for Ruger MK1, Ruger MK2 and Ruger MK3:

  • Precision machined steel. Small as a dime.
  • Weighs less than one tenth of one ounce.
  • Electroplated to resist corrosion.
  • HSS ONE-TIME FIX is simply an assembly aid that remains in pistol handle.
  • After installation, HSS does not touch any moving or functioning part of pistol.

Package Contents:

  • HSS Corp Hammer Strut Support for Ruger MK

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Volquartsen Firearms VS3 Recoil Rod Spring and Assembly Kit for Ruger MKII, MKIII and 22/45, Silver, VC3RS
(4)
List: $22.50
$21.99
Rim/Edge Ruger Mark Series Sentinel Guide Rod, Gold, TK05N0524GLD1
Rim/Edge Ruger Mark Series Sentinel Guide Rod, Gold, TK05N0524GLD1
(1)
List: $25.49 (Save 22%)
$19.99
Best Rated
TANDEMKROSS Fire Starter Titanium Firing Pin for Ruger MKI, MKII, MKIII, 22/45 & MKIV, Silver, TK05N0011SSL1
TANDEMKROSS Fire Starter Titanium Firing Pin for Ruger MKI, MKII, MKIII, 22/45 & MKIV, Silver, TK05N0011SSL1
(6)
List: $41.97 (Save 36%)
$26.99
TANDEMKROSS Eagles Talon Extractor for Ruger MKI, MKII, MKIII, 22/45 & MKIV, Black, TK05N0012SSL1
TANDEMKROSS Eagles Talon Extractor for Ruger MKI, MKII, MKIII, 22/45 & MKIV, Black, TK05N0012SSL1
(4)
$12.99
Volquartsen Firearms Reduced Pistol Recoil Spring Ruger MKII, MKIII, MK IV, and 22/45, VC3RSO-R
Volquartsen Firearms Reduced Pistol Recoil Spring Ruger MKII, MKIII, MK IV, and 22/45, VC3RSO-R
List: $6.00
$5.99
Volquartsen Firearms Heavy Pistol Recoil Spring Ruger MKII, MKIII, MK IV, and 22/45, VC3RSO-H
Volquartsen Firearms Heavy Pistol Recoil Spring Ruger MKII, MKIII, MK IV, and 22/45, VC3RSO-H
List: $6.00
$5.99
Blazin' Deal
Hogue Ruger MK II MK III Screws , 4, Slotted, Stainless Finish Grip 82018
Hogue Ruger MK II MK III Screws , 4, Slotted, Stainless Finish Grip 82018
List: $8.95 (Save 10%)
$8.09
Volquartsen Firearms V-Cut Single-port Compensator for LLV-4, Ruger
Volquartsen Firearms V-Cut Single-port Compensator for LLV-4, Ruger
List: $103.00 (Save 10%)
$92.70
See all 2 models
Volquartsen Firearms Extended Bolt Release for MKII and MKIII
Volquartsen Firearms Extended Bolt Release for MKII and MKIII
List: $13.50
$13.49
See all 2 models
Blazin' Deal
Hogue Ruger MK II Screws, 4, Slot - Black 82008
Hogue Ruger MK II Screws, 4, Slot - Black 82008
List: $22.99 (Save 26%)
$17.09
Volquartsen Firearms VC Mainspring for Ruger MKII and MKIII, Black, VC3MSR-3-B
Volquartsen Firearms VC Mainspring for Ruger MKII and MKIII, Black, VC3MSR-3-B
List: $77.00 (Save $1.01)
$75.99
Volquartsen Firearms Posi-Lock Bolt Latch for MKII and MKIII, Silver, VC3BHL
Volquartsen Firearms Posi-Lock Bolt Latch for MKII and MKIII, Silver, VC3BHL
(1)
List: $22.50
$21.99
HKS .22 Long Rifle Magazine Speedloader
HKS .22 Long Rifle Magazine Speedloader
(2)
List: $9.99 (Save 40%)
$5.99
Volquartsen Firearms SureStrike Firing Pin for MKI, MKII, and MKIII, Silver, VC2SSFP
Volquartsen Firearms SureStrike Firing Pin for MKI, MKII, and MKIII, Silver, VC2SSFP
List: $35.00 (Save $3.01)
$31.99
Volquartsen Firearms Standard Pistol Recoil Spring Ruger MKII, MKIII, MK IV, and 22/45, VC3RSO-S
Volquartsen Firearms Standard Pistol Recoil Spring Ruger MKII, MKIII, MK IV, and 22/45, VC3RSO-S
List: $6.00
$5.99
Hogue Ruger MK II Screw (4) Hex Satin 82019
Hogue Ruger MK II Screw (4) Hex Satin 82019
(1)
List: $17.95 (Save 50%)
$8.99
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Magazine and Accessories

1–9 / 9
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Savage Arms 90005 MKII 22 Long Rifle 5 Rd Blued Finish
Savage Arms 90005 MKII 22 Long Rifle 5 Rd Blued Finish
List: $51.99 (Save 37%)
$32.84
Ruger Magazine 22/45 MKIII 22LR 10RD AP10MKIII-10RD
Ruger Magazine 22/45 MKIII 22LR 10RD AP10MKIII-10RD
List: $47.80 (Save 17%)
$39.89
Mec-Gar Mark II 22 Long Rifle 10 Round Pistol Magazine, Blued, 1 Pack, Carbon Steel, MGMK22LRB-10RD
Mec-Gar Mark II 22 Long Rifle 10 Round Pistol Magazine, Blued, 1 Pack, Carbon Steel, MGMK22LRB-10RD
List: $35.95 (Save 22%)
$27.89
Ruger Magazine MKII 22LR 10RD M-10-10RD
Ruger Magazine MKII 22LR 10RD M-10-10RD
(4)
List: $32.95 (Save $2.96)
$29.99
Best Rated
Ruger Mark III/Mark IV .22 Long Rifle 10 Rd Magazine, 2 Pack
Ruger Mark III/Mark IV .22 Long Rifle 10 Rd Magazine, 2 Pack
(18)
List: $51.95 (Save $1.96)
$49.99
Best Rated
TANDEMKROSS Titan Extended Magazine Release for Ruger
TANDEMKROSS Titan Extended Magazine Release for Ruger
(5)
As Low As (Save Up to 36%)
$29.99
See all 4 models
Mec-Gar USA Inc Magazine For Ruger MKIII .22 LR 10 Round Blue MGMK322LRB
Mec-Gar USA Inc Magazine For Ruger MKIII .22 LR 10 Round Blue MGMK322LRB
(1)
List: $34.84 (Save $2.85)
$31.99
ProMag Ruger MK III 10-Round .22 LR Magazine, Blued Steel, Black, RUG 20
ProMag Ruger MK III 10-Round .22 LR Magazine, Blued Steel, Black, RUG 20
List: $37.44 (Save 15%)
$31.89
Ruger Magazine MKIII 22LR 10RD M10MKIII-10RD
Ruger Magazine MKIII 22LR 10RD M10MKIII-10RD
(3)
List: $32.95 (Save 14%)
$28.30
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Gun Triggers

1–16 / 16
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Free 2 Day Shipping
Volquartsen Firearms Ruger MK Accurizing Kit
Volquartsen Firearms Ruger MK Accurizing Kit
(60)
As Low As (Save 10%)
$137.00
See all 5 models
Volquartsen Firearms Accurizing Kit Ruger MKII or MKIII Pistol, Black/Gold, VC2AK-GT
Volquartsen Firearms Accurizing Kit Ruger MKII or MKIII Pistol, Black/Gold, VC2AK-GT
List: $178.00 (Save 10%)
$160.00
Best Rated
Volquartsen Firearms Pistol Competition Kit, Ruger MKII/MKIII/22/45
Volquartsen Firearms Pistol Competition Kit, Ruger MKII/MKIII/22/45
(12)
As Low As (Save Up to 23%)
$143.99
See all 4 models
Volquartsen Firearms Target Sear for MKII and MKIII, Silver, VC2TS
Volquartsen Firearms Target Sear for MKII and MKIII, Silver, VC2TS
(1)
List: $33.00
$32.99
Volquartsen Firearms Pistol Competition Kit Ruger MKII or MKIII, Black/Gold, VC2PCK-GT
Volquartsen Firearms Pistol Competition Kit Ruger MKII or MKIII, Black/Gold, VC2PCK-GT
(1)
List: $210.00 (Save 10%)
$189.00
Best Rated
TANDEMKROSS Victory Trigger for Ruger MKIII/IV 22/45, Black, TK04N0085BLK1
TANDEMKROSS Victory Trigger for Ruger MKIII/IV 22/45, Black, TK04N0085BLK1
(7)
List: $49.99 (Save $2.50)
$47.49
Newly Added
Volquartsen Firearms Ruger Mark III Accurizing Kit
Volquartsen Firearms Ruger Mark III Accurizing Kit
List: $174.00 (Save 10%)
$157.00
See all 3 models
Volquartsen Firearms Target Trigger for MKII and MKIII
Volquartsen Firearms Target Trigger for MKII and MKIII
As Low As (Save Up to 10%)
$36.99
See all 2 models
Newly Added
Volquartsen Firearms Ruger Mark III Pistol Competition Kit
Volquartsen Firearms Ruger Mark III Pistol Competition Kit
List: $206.00 (Save 10%)
$185.00
See all 3 models
Newly Added
Volquartsen Firearms 19.22 Pistol Trigger
Volquartsen Firearms 19.22 Pistol Trigger
As Low As
$59.99
See all 3 models
Volquartsen Firearms Target Hammer for MKII, Silver, VC2TH
Volquartsen Firearms Target Hammer for MKII, Silver, VC2TH
(1)
List: $59.00 (Save 10%)
$53.10
Volquartsen Firearms CNC-Machined Disconnector for MKII and MKIII, Black, VC2DN
Volquartsen Firearms CNC-Machined Disconnector for MKII and MKIII, Black, VC2DN
(2)
List: $54.99 (Save 28%)
$39.79
Best Rated
TANDEMKROSS Victory Trigger, Ruger 22/45, Flat-Faced, Skeletonized, Red, TK04N0179RED1
TANDEMKROSS Victory Trigger, Ruger 22/45, Flat-Faced, Skeletonized, Red, TK04N0179RED1
(16)
List: $59.99 (Save $2.00)
$57.99
TANDEMKROSS Steel Hammer Bushing for Ruger MKIII & MKIII 22/45, Silver, TK04N0002SSL1
TANDEMKROSS Steel Hammer Bushing for Ruger MKIII & MKIII 22/45, Silver, TK04N0002SSL1
(2)
$9.99
Volquartsen Firearms Target Pistol Trigger Ruger MKII, MKIII, and MK IV, Gold, VC2TT-GT
Volquartsen Firearms Target Pistol Trigger Ruger MKII, MKIII, and MK IV, Gold, VC2TT-GT
(1)
List: $66.00 (Save 10%)
$59.40
Volquartsen Firearms Hammer Bushing for MKII, Black VC2HB
Volquartsen Firearms Hammer Bushing for MKII, Black VC2HB
List: $9.50
$9.49
Next

Mounts, Rings and Accessories

1–5 / 5
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Best Rated
Evolution Gun Works Vortex Viper/Venom Sight Mount, Burris FastFire and Docter, Ruger Mk 1, Mk2, Mk4, P85, and P90, Black, 49321
Evolution Gun Works Vortex Viper/Venom Sight Mount, Burris FastFire and Docter, Ruger Mk 1, Mk2, Mk4, P85, and P90, Black, 49321
(32)
List: $49.99 (Save $4.00)
$45.99
Best Rated
TANDEMKROSS Shadow Picatinny Rail, Ruger MKII/III/IV and 22/45
TANDEMKROSS Shadow Picatinny Rail, Ruger MKII/III/IV and 22/45
(15)
List: $37.99 (Save Up to 42%)
$34.99
See all 2 models
Best Rated
Ruger Weaver-Style Scope Base Adapter for Mark I, II, III and 22-45, Black 90228
Ruger Weaver-Style Scope Base Adapter for Mark I, II, III and 22-45, Black 90228
(8)
List: $22.95 (Save 31%)
$15.79
NCSTAR Micro Dot Mount for Ruger MK2 Pistol, Black MRUMK2
NCSTAR Micro Dot Mount for Ruger MK2 Pistol, Black MRUMK2
List: $16.99 (Save $1.00)
$15.99
Evolution Gun Works Vortex Razor Sight Mount, Ruger Mk 1, Mk 2, Mk 3, Mk 4, P85, and P90, Black, 49440
Evolution Gun Works Vortex Razor Sight Mount, Ruger Mk 1, Mk 2, Mk 3, Mk 4, P85, and P90, Black, 49440
(1)
List: $49.99 (Save $3.00)
$46.99
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HSS Corp Hammer Strut Support for Ruger MK Accessories

1–6 / 6
Previous
Up to 14% Coupon
Tactical Solutions Pac-Lite MK Series Holster
Tactical Solutions Pac-Lite MK Series Holster
(18)
As Low As (Save Up to 13%)
$41.99
See all 5 models
Mantis X Magazine Floor Plate Rail Adapter, Ruger Mark IV/III, MT-2049
Mantis X Magazine Floor Plate Rail Adapter, Ruger Mark IV/III, MT-2049
(3)
List: $25.00 (Save 20%)
$19.99
Up to 14% Coupon
Bianchi 7000 AccuMold Sporting Holster
Bianchi 7000 AccuMold Sporting Holster
(38)
As Low As (Save Up to 20%)
$47.20
See all 26 models
Blazin' Deal
Hogue Monogrip Wraparound with Right Hand Thumbrest Ruger MKII
Hogue Monogrip Wraparound with Right Hand Thumbrest Ruger MKII
(3)
List: $29.95 (Save 24%)
$22.91
Infinite Product Solutions Gen 1 Ruger Mark 2/3/4 Bull - 1/2-28 Slip-On Adapter, Black, MK3-1228-BS
Infinite Product Solutions Gen 1 Ruger Mark 2/3/4 Bull - 1/2-28 Slip-On Adapter, Black, MK3-1228-BS
(2)
$39.99
Blazin' Deal
Hogue Wraparound Monogrip with Left Hand Thumbrest - Ruger MKII
Hogue Wraparound Monogrip with Left Hand Thumbrest - Ruger MKII
(2)
List: $29.95 (Save $1.16)
$28.79
Next

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HSS Corp Hammer Strut Support for Ruger MK Unavailable & Discontinued Models

List of Unorderable Models

  • HSS Corp Hammer Strut Support for Ruger MK, Silver, One Size, HSS-01 , MPN: HSS-01 , Code: 5KL-80P-HSSR-HSS-01
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