Manufacturer: Springfield Armory
Caliber: 45 ACP
Model/Size: 1911-A1 “GSP” (Gunsite Service Pistol)
Finish: Blued
Condition: Pre-Owned
Box/Papers: No
Offered here is an interesting Springfield Armory Gunsite Service Pistol (GSP), chambered in .45 ACP and reportedly built during the mid-to-late 1980s by either Robbie Barrkman or John Mahan, both associated with the early Gunsite tradition of custom defensive 1911s.
Founded by Colonel Jeff Cooper in 1976, the American Pistol Institute, later known as Gunsite Academy, became one of the most influential institutions in modern defensive pistolcraft. The Gunsite Service Pistol reflected Cooper's philosophy that a proper fighting handgun should emphasize reliability, practical accuracy, and functional simplicity rather than unnecessary embellishment.
Built on a Springfield Armory Government Model, this pistol features a distinctive, ornate script-style "GSP" engraving on the right side of the slide. Reportedly built during the mid-to-late 1980s, it represents the early period of the Gunsite Service Pistol, when these firearms were individually customized rather than produced as standardized factory models.
Its features include fixed rear and ramped front sights, extended thumb safety, Commander-style hammer, lightweight three-hole trigger, checkered wood grips, and a lanyard loop. The slide-to-frame fit is tight, reflecting the careful fitting associated with quality custom 1911 work of the period.
According to the consignor, the pistol was built during the mid-to-late 1980s by either Robbie Barrkman or John Mahan, and was reportedly handled by Colonel Jeff Cooper himself. While this history is intriguing, no supporting documentation accompanies the pistol to establish the identity of the gunsmith or substantiate Cooper's personal involvement.
The pistol retains a dark blued finish in very good condition, although its originality is unknown and it may have been refinished at some point.
With its distinctive GSP slide engraving, traditional defensive configuration, and reported association with the early Gunsite gunsmiths, this Springfield Armory represents an interesting example of the custom 1911s produced during a formative period in the evolution of the modern fighting pistol.
Ships FedEx 2nd Day with (1) magazine inside a gun rug.
Click here to view high resolution photos
Manufacturer: Springfield Armory
Caliber: 45 ACP
Model/Size: 1911-A1 “GSP” (Gunsite Service Pistol)
Finish: Blued
Condition: Pre-Owned
Box/Papers: No
Offered here is an interesting Springfield Armory Gunsite Service Pistol (GSP), chambered in .45 ACP and reportedly built during the mid-to-late 1980s by either Robbie Barrkman or John Mahan, both associated with the early Gunsite tradition of custom defensive 1911s.
Founded by Colonel Jeff Cooper in 1976, the American Pistol Institute, later known as Gunsite Academy, became one of the most influential institutions in modern defensive pistolcraft. The Gunsite Service Pistol reflected Cooper's philosophy that a proper fighting handgun should emphasize reliability, practical accuracy, and functional simplicity rather than unnecessary embellishment.
Built on a Springfield Armory Government Model, this pistol features a distinctive, ornate script-style "GSP" engraving on the right side of the slide. Reportedly built during the mid-to-late 1980s, it represents the early period of the Gunsite Service Pistol, when these firearms were individually customized rather than produced as standardized factory models.
Its features include fixed rear and ramped front sights, extended thumb safety, Commander-style hammer, lightweight three-hole trigger, checkered wood grips, and a lanyard loop. The slide-to-frame fit is tight, reflecting the careful fitting associated with quality custom 1911 work of the period.
According to the consignor, the pistol was built during the mid-to-late 1980s by either Robbie Barrkman or John Mahan, and was reportedly handled by Colonel Jeff Cooper himself. While this history is intriguing, no supporting documentation accompanies the pistol to establish the identity of the gunsmith or substantiate Cooper's personal involvement.
The pistol retains a dark blued finish in very good condition, although its originality is unknown and it may have been refinished at some point.
With its distinctive GSP slide engraving, traditional defensive configuration, and reported association with the early Gunsite gunsmiths, this Springfield Armory represents an interesting example of the custom 1911s produced during a formative period in the evolution of the modern fighting pistol.
Ships FedEx 2nd Day with (1) magazine inside a gun rug.
Click here to view high resolution photos
Image 1 of 23
Image 2 of 23
Image 3 of 23
Image 4 of 23
Image 5 of 23
Image 6 of 23
Image 7 of 23
Image 8 of 23
Image 9 of 23
Image 10 of 23
Image 11 of 23
Image 12 of 23
Image 13 of 23
Image 14 of 23
Image 15 of 23
Image 16 of 23
Image 17 of 23
Image 18 of 23
Image 19 of 23
Image 20 of 23
Image 21 of 23
Image 22 of 23
Image 23 of 23