GREEN MOUNTAIN RUGER 10/22 20″ FLUTED SPORTER BARREL | STAINLESS
The Longer Sporter. Stainless. Distinctly Green Mountain.
The Green Mountain 901777 brings a longer 20″ barrel to the traditional Ruger 10/22 profile without committing to a straight .920″ bull barrel. This .22 LR fluted sporter-taper barrel combines 416 stainless steel, a clean tapered silhouette and the familiar 1:16 twist listed for this model. It's the right direction when you want a classic rifle shape with a little more barrel in front of you.
The interesting thing about the 901777 is its balance of form: 20″ length, stainless finish and a fluted taper. The contour starts around .920″ at the breech and steps down toward .640″ at the muzzle, making it a different proposition than Green Mountain's full-diameter bull barrels. The current listing specifies a .22 LR Bentz chamber and 1:16 rifling twist. Use it for: a classic-style 10/22 upgrade, stainless sporter rifle project, range build or field-oriented rimfire where a long tapered barrel is part of the plan.
20″ of Stainless Sporter Barrel.
A fluted sporter contour gives you the visual appeal of a custom barrel while keeping the profile closer to a conventional 10/22 stock channel than a full bull barrel. Green Mountain lists this model as button-rifled, air gauged and stress relieved. The current seller specifications report 416 stainless construction, a recessed target crown and an approximate 1.90 lb weight. Those figures should be confirmed against Green Mountain's current SKU data before publishing manufacturer-certified claims.
Product Specifications
Manufacturer: Green Mountain Rifle Barrel Co.
MPN: 901777
Caliber: .22 LR
Rifling Twist: 1:16 (current Pete's Pillars listing; manufacturer SKU confirmation pending)
Chamber: Bentz .22 LR (current listing)
Length: 20″
Contour: Fluted sporter taper, approximately .920″ breech to .640″ muzzle
Material / Finish: 416 stainless steel / stainless
Muzzle: Target crown; threading not established
Weight: Approximately 1.90 lb (current listing)
Manufacturing: Button rifled, air gauged, stress relieved (current listing)
Ammunition: Confirm manufacturer guidance for this exact chamber; the current listing restricts Stinger and subsonic use
Pair It With: Small Parts Worth Refreshing.
If you are refreshing the rifle, our stainless hardware and buffers are easy additions to the same project. Keep these smaller items in one compact row; the main upgrades come next.
Viton Buffer + Trigger PinsStainless pins and recoil buffer combo.
Stainless V-Block ScrewsReplacement barrel-retaining hardware.
10/22 Picatinny Scope RailAn option if you later choose an optic.Build Around Your 20″ Sporter Barrel.
Keeping an original-style sporter stock? First check the barrel channel and the fit of the 20″ tapered contour. Moving to a more modern 10/22? The MDT Field Stock, KRG Bravo and Oryx offer different ergonomic approaches. Their wider forends can accommodate many contours, but look and clearance should still be checked for a sporter taper.
Build Around It
Ruger 10/22 Stocks & Chassis
Choose your stock style while checking how a 20″ tapered sporter barrel sits in the barrel channel.
MDTMDT Field Stock Ruger 10/22Adjustable field-style stock with a supported forend.See Product →
KRGKRG Bravo Ruger 10/22A familiar precision-rifle feel for rimfire shooting.See Product →
MDTMDT Oryx Ruger 10/22Aluminum chassis approach to a range-ready rifle.See Product →
Pete's Pillars CustomMDT Oryx M81 WoodlandCustom Cerakote for a distinct 10/22 build; verify your preferred barrel-channel fit.See Product →Finish Your Build With the Parts That Matter.
A good barrel and a trigger are the major decisions. We carry complete TandemKross Manticore and Volquartsen TG2000 trigger assemblies, and KIDD single-stage and two-stage triggers are worth discussing when comparing trigger feel and configuration. KIDD belongs in that comparison—not as a featured product card on this page. The TandemKross KrossFire bolt is another option if you want to go beyond the barrel alone.
Finish Your Build
Triggers & Major Upgrades
Build-defining upgrades rather than another row of small hardware.
TandemKrossTandemKross Manticore Trigger – BlackComplete trigger assembly with integrated controls.See Product →
VolquartsenVolquartsen TG2000 Trigger – BlackPremium trigger assembly for a dedicated 10/22 build.See Product →
TandemKrossTandemKross KrossFire CNC BoltA complete bolt alternative for a more extensive rebuild.See Product →Prefer a Heavy Bull Barrel Instead?
The 901777 is for a longer, tapered, stainless 10/22 build. Want a straight bull profile instead? Compare the Green Mountain 901507 18″ fluted stainless bull barrel or the Shaw 18″ stainless bull barrel. For iron-sight builds, consider the Green Mountain 901512 with Fire Sights. These are distinct barrel profiles, not interchangeable descriptions.
Did You Know? Pete's Pillars Sells More Than Pillars.
From our own Made-in-USA small parts to the brands you already trust, we help shooters finish more than one corner of the build.
Frequently Asked Questions
Sporter-taper fitment, chamber verification and ways to complete the build.
What is the Green Mountain 901777 barrel made for?
The Green Mountain 901777 is a 20″ stainless fluted sporter-taper barrel chambered for .22 LR and listed for the conventional Ruger 10/22 platform. It is not a 10/22 Takedown barrel. Verify your exact receiver and stock configuration.
What are the caliber and twist rate?
The published Pete's Pillars listing specifies .22 LR and a 1:16 rifling twist, with a Bentz chamber. These values have not been independently confirmed on a currently accessible Green Mountain SKU page, so verify current manufacturer specifications before relying on them.
Will it fit a factory Ruger 10/22 sporter stock?
This is a tapered sporter profile, approximately .920″ at the breech to .640″ at the muzzle according to the current listing, rather than a full-length .920″ bull contour. Check clearance along the complete channel and verify your specific stock model; a conventional sporter channel is generally a more natural starting point.
How does this differ from a .920″ bull barrel?
The 20″ 901777 narrows toward the muzzle, while a .920″ bull barrel remains thick through most of its length. If you prefer a heavier, straight-profile stainless option, compare the Green Mountain 901507 18″ fluted bull barrel.
Is this barrel threaded or equipped with sights?
The current 901777 listing specifies a target crown and does not establish muzzle threading or an included sight set. Do not assume either is provided. The Green Mountain 901512 Fire Sights barrel is a separately listed product.
Can I use Stinger or subsonic ammunition?
The current Pete's Pillars listing cautions against Stinger and subsonic ammunition. Because that guidance was not independently confirmed from Green Mountain for this exact SKU, follow the manufacturer's latest chamber and ammunition instructions and verify suitability before use.
What upgrades pair well with this barrel?
Start with the major decisions: stock or chassis and a complete trigger assembly. KIDD remains worth comparing by name when choosing triggers. We also stock the Volquartsen Competition Bolt Assembly. For smaller hardware, see our Viton buffer and pins and stainless V-block screws.
Pete's Pillars is an authorized Green Mountain dealer.
Small Change. Big Impact. Pete's Pillars.
GREEN MOUNTAIN RUGER 10/22 20″ FLUTED SPORTER BARREL | STAINLESS
The Longer Sporter. Stainless. Distinctly Green Mountain.
The Green Mountain 901777 brings a longer 20″ barrel to the traditional Ruger 10/22 profile without committing to a straight .920″ bull barrel. This .22 LR fluted sporter-taper barrel combines 416 stainless steel, a clean tapered silhouette and the familiar 1:16 twist listed for this model. It's the right direction when you want a classic rifle shape with a little more barrel in front of you.
The interesting thing about the 901777 is its balance of form: 20″ length, stainless finish and a fluted taper. The contour starts around .920″ at the breech and steps down toward .640″ at the muzzle, making it a different proposition than Green Mountain's full-diameter bull barrels. The current listing specifies a .22 LR Bentz chamber and 1:16 rifling twist. Use it for: a classic-style 10/22 upgrade, stainless sporter rifle project, range build or field-oriented rimfire where a long tapered barrel is part of the plan.
20″ of Stainless Sporter Barrel.
A fluted sporter contour gives you the visual appeal of a custom barrel while keeping the profile closer to a conventional 10/22 stock channel than a full bull barrel. Green Mountain lists this model as button-rifled, air gauged and stress relieved. The current seller specifications report 416 stainless construction, a recessed target crown and an approximate 1.90 lb weight. Those figures should be confirmed against Green Mountain's current SKU data before publishing manufacturer-certified claims.
Product Specifications
Manufacturer: Green Mountain Rifle Barrel Co.
MPN: 901777
Caliber: .22 LR
Rifling Twist: 1:16 (current Pete's Pillars listing; manufacturer SKU confirmation pending)
Chamber: Bentz .22 LR (current listing)
Length: 20″
Contour: Fluted sporter taper, approximately .920″ breech to .640″ muzzle
Material / Finish: 416 stainless steel / stainless
Muzzle: Target crown; threading not established
Weight: Approximately 1.90 lb (current listing)
Manufacturing: Button rifled, air gauged, stress relieved (current listing)
Ammunition: Confirm manufacturer guidance for this exact chamber; the current listing restricts Stinger and subsonic use
Pair It With: Small Parts Worth Refreshing.
If you are refreshing the rifle, our stainless hardware and buffers are easy additions to the same project. Keep these smaller items in one compact row; the main upgrades come next.
Viton Buffer + Trigger PinsStainless pins and recoil buffer combo.Stainless V-Block ScrewsReplacement barrel-retaining hardware.10/22 Picatinny Scope RailAn option if you later choose an optic.Build Around Your 20″ Sporter Barrel.
Keeping an original-style sporter stock? First check the barrel channel and the fit of the 20″ tapered contour. Moving to a more modern 10/22? The MDT Field Stock, KRG Bravo and Oryx offer different ergonomic approaches. Their wider forends can accommodate many contours, but look and clearance should still be checked for a sporter taper.
Build Around It
Ruger 10/22 Stocks & Chassis
Choose your stock style while checking how a 20″ tapered sporter barrel sits in the barrel channel.
MDTMDT Field Stock Ruger 10/22Adjustable field-style stock with a supported forend.See Product →KRGKRG Bravo Ruger 10/22A familiar precision-rifle feel for rimfire shooting.See Product →MDTMDT Oryx Ruger 10/22Aluminum chassis approach to a range-ready rifle.See Product →Pete's Pillars CustomMDT Oryx M81 WoodlandCustom Cerakote for a distinct 10/22 build; verify your preferred barrel-channel fit.See Product →Finish Your Build With the Parts That Matter.
A good barrel and a trigger are the major decisions. We carry complete TandemKross Manticore and Volquartsen TG2000 trigger assemblies, and KIDD single-stage and two-stage triggers are worth discussing when comparing trigger feel and configuration. KIDD belongs in that comparison—not as a featured product card on this page. The TandemKross KrossFire bolt is another option if you want to go beyond the barrel alone.
Finish Your Build
Triggers & Major Upgrades
Build-defining upgrades rather than another row of small hardware.
TandemKrossTandemKross Manticore Trigger – BlackComplete trigger assembly with integrated controls.See Product →VolquartsenVolquartsen TG2000 Trigger – BlackPremium trigger assembly for a dedicated 10/22 build.See Product →TandemKrossTandemKross KrossFire CNC BoltA complete bolt alternative for a more extensive rebuild.See Product →Prefer a Heavy Bull Barrel Instead?
The 901777 is for a longer, tapered, stainless 10/22 build. Want a straight bull profile instead? Compare the Green Mountain 901507 18″ fluted stainless bull barrel or the Shaw 18″ stainless bull barrel. For iron-sight builds, consider the Green Mountain 901512 with Fire Sights. These are distinct barrel profiles, not interchangeable descriptions.
Did You Know? Pete's Pillars Sells More Than Pillars.
From our own Made-in-USA small parts to the brands you already trust, we help shooters finish more than one corner of the build.
Frequently Asked Questions
Sporter-taper fitment, chamber verification and ways to complete the build.
What is the Green Mountain 901777 barrel made for?
The Green Mountain 901777 is a 20″ stainless fluted sporter-taper barrel chambered for .22 LR and listed for the conventional Ruger 10/22 platform. It is not a 10/22 Takedown barrel. Verify your exact receiver and stock configuration.
What are the caliber and twist rate?
The published Pete's Pillars listing specifies .22 LR and a 1:16 rifling twist, with a Bentz chamber. These values have not been independently confirmed on a currently accessible Green Mountain SKU page, so verify current manufacturer specifications before relying on them.
Will it fit a factory Ruger 10/22 sporter stock?
This is a tapered sporter profile, approximately .920″ at the breech to .640″ at the muzzle according to the current listing, rather than a full-length .920″ bull contour. Check clearance along the complete channel and verify your specific stock model; a conventional sporter channel is generally a more natural starting point.
How does this differ from a .920″ bull barrel?
The 20″ 901777 narrows toward the muzzle, while a .920″ bull barrel remains thick through most of its length. If you prefer a heavier, straight-profile stainless option, compare the Green Mountain 901507 18″ fluted bull barrel.
Is this barrel threaded or equipped with sights?
The current 901777 listing specifies a target crown and does not establish muzzle threading or an included sight set. Do not assume either is provided. The Green Mountain 901512 Fire Sights barrel is a separately listed product.
Can I use Stinger or subsonic ammunition?
The current Pete's Pillars listing cautions against Stinger and subsonic ammunition. Because that guidance was not independently confirmed from Green Mountain for this exact SKU, follow the manufacturer's latest chamber and ammunition instructions and verify suitability before use.
What upgrades pair well with this barrel?
Start with the major decisions: stock or chassis and a complete trigger assembly. KIDD remains worth comparing by name when choosing triggers. We also stock the Volquartsen Competition Bolt Assembly. For smaller hardware, see our Viton buffer and pins and stainless V-block screws.
Pete's Pillars is an authorized Green Mountain dealer.
Small Change. Big Impact. Pete's Pillars.
| Brand | Green Mountain |
| Gun Platform | 10/22 |
| Muzzle | Target Crown |
| Type | Barrel |
| Barrel Length | 20" |
| Barrel Twist | 1:16 |