Complete 1911/2011 Competition Upgrade Guide 2026 | STI, Bul Armory, SVI
The 1911/2011 platform remains the weapon of choice for competitive shooters in IPSC Open and Limited divisions. Whether you're running a single-stack 1911 in Standard division or pushing the limits of a double-stack 2011 in Open, the right upgrades transform a factory pistol into a stage-dominating race gun. This guide covers every upgrade available from Boss Components for the 1911 and 2011 platform, from magwells and base pads to thumb rests, optics mounts, and internal performance parts, with specific recommendations for each IPSC and USPSA division.
1911 vs 2011: Understanding the Platforms
The 1911 and 2011 share DNA but serve different competitive niches. The classic 1911 is a single-stack design running .45 ACP or 9mm, popular in IPSC Classic and Standard divisions. The 2011 (originally developed by STI) is a double-stack evolution that dominates Open and Limited divisions with higher magazine capacities and modular grip frames.
Key differences that affect your upgrade path: magazine type (single-stack vs double-stack), grip frame width, magwell dimensions, and division eligibility. Boss Components covers both platforms with dedicated accessories for each.
Magwells: Open vs Limited Division
The magwell is the highest-impact upgrade for reload speed. For 2011 shooters, the choice between Open and Limited magwells matters because Open magwells have a wider flare for maximum speed, while Limited magwells maintain a more compact profile within weight limits.
| Magwell | Division | Material | Price |
|---|---|---|---|
| STI 2011 Aluminium Magwell Limited | Limited/Standard | Aluminium | $109.99 |
| STI 2011 Brass Magwell Limited | Limited/Standard | Brass | $159.99 |
| STI 2011 Aluminium Magwell Open | Open | Aluminium | $139.99 |
| STI 2011 Brass Magwell Open | Open | Brass | $189.99 |
Choose brass if you want maximum weight at the grip for recoil reduction. Brass magwells add significant mass that dampens muzzle flip during rapid strings.
Choose aluminium if you need to stay under division weight limits or prefer a lighter, more pointable gun.
- STI 2011 Brass Magwell Limited — $159.99
- STI 2011 Brass Magwell Open — $189.99
- STI 2011 Aluminium Magwell Limited — $109.99
- STI 2011 Aluminium Magwell Open — $139.99
Magazine Base Pads by Platform
Base pads are where single-stack and double-stack diverge completely. Make sure you're buying for your platform.
1911 Single-Stack Base Pads
- 1911 Mec-Gar/Bul Armory Aluminium Base Pad — $34.99
- 1911 Mec-Gar/Bul Armory Brass Base Pad — $39.99
- 1911 Metalform Magazine Bumper Base Pad — $36.99
- 1911 Metalform/Dawson/Tripp Brass Base Pad — $39.99
2011 Double-Stack Base Pads
- 2011 Aluminium Double Stack Base Pad — $34.99
- 2011 Brass Double Stack Base Pad (IPSC Standard) — $39.99
- 2011 Aluminium Double Stack Open Base Pad — $39.99
- STI 2011 Brass Double Stack Open Base Pad — $44.99
- MBX 2011 Brass Magazine Base Pad — $44.99
- SVI 2011 Brass Magazine Base Pad — $44.99
Thumb Rests and Controls
Thumb rests provide a consistent index point for your support hand, improving accuracy and control. The 1911/2011 platform offers multiple thumb rest options.
- 1911/2011 Adjustable Thumb Rest — $49.99 — Entry-level, adjustable angle
- 1911/2011 Large Wide Thumb Rest — $79.99 — Wider platform for larger hands
- 1911/2011 Slide Stop Thumb Rest — $139.99 — Replaces slide stop, dual function
Optics and Red Dot Mounts
Red dots are mandatory in Open and increasingly popular in Carry Optics.
- 1911/2011 Red Dot Scope Multi Mount — $139.99 — Universal mount for RMR, Holosun, DPP
- Bul Armory 1911/2011 Red Dot Mount — $139.99
- SVI Infinity Red Dot Mount — $69.99
Safety Upgrades
The ambidextrous safety is essential for competition shooters who need fast, positive engagement from either side.
Internal Performance
- 1911/2011 Extended Firing Pin — $38.99
- 1911/2011 Progressive Recoil Spring — $9.95
- 1911/2011 Stainless Steel Guide Rod and Sleeve — $59.99
- 1911/2011 Extended Magazine Release — $39.99
- 1911 Hex Grip Screw and Bushing Kit — $12.95
Budget Build vs Race Gun Build
Budget Competition Build (~$350): Aluminium Limited Magwell ($109.99) + Adjustable Thumb Rest ($49.99) + 4x Aluminium Base Pads ($139.96) + Progressive Recoil Spring ($9.95) + Grip Screws ($12.95)
Full Race Gun Build (~$1,100): Brass Open Magwell ($189.99) + Wide Thumb Rest ($79.99) + Ambidextrous Safeties ($159.99) + Red Dot Multi Mount ($139.99) + 4x Brass Open Base Pads ($179.96) + Stainless Guide Rod ($59.99) + Extended Firing Pin ($38.99) + Extended Mag Release ($39.99) + Progressive Recoil Spring ($9.95)
Division Compliance
IPSC Standard / USPSA Limited: Limited-profile magwells legal, extended base pads allowed within capacity limits, thumb rests permitted, optics NOT allowed (iron sights only).
IPSC Classic: 1911 single-stack only, restricted modifications. Use standard base pads and minimal external mods.
IPSC/USPSA Open: No restrictions. Full race gun build with compensator, optic, extended everything.
Complete Your 1911/2011 Setup
- 1911/2011 Performance Bundle — $214.99
- Red Dot + Thumb Rest Precision Kit — $154.99
- Wide Thumb Rest Competition Bundle — $126.99
Deep-Dive Technical Guides
Read the dedicated technical guides before you commit to an upgrade path. Each one pairs install steps with competition data.
- Browse the complete 2011 parts collection — every 2011, 1911, STI, and Bul Armory component in stock, filterable by category
- 2011 thumb rest buying guide: slide stop vs frame-mounted — which thumb rest matches your grip size and division
- Bul Armory 2011 pistols: complete buyer's guide — SAS II, Axe, and Trophy specs compared for USPSA Limited and Open
- 2011 extended magazine release: installation and USPSA advantages — step-by-step install with reload-time data
- 1911 recoil spring weight chart and tuning guide — match spring weight to load and barrel length
- 2011 brass magwell vs aluminium magwell: IPSC and USPSA comparison — weight, cost, and division-specific picks
- 1911/2011 red dot mount compatibility: Rock Island, STI, Bul Armory, SVI — fitment chart for every common 2011 frame
- Cross-platform: CZ Shadow 2 competition setup guide — for shooters bridging between CZ and 2011 race guns
Frequently Asked Questions
Q: Do 1911 base pads fit 2011 magazines?
No. 1911 and 2011 use different magazine designs. Single-stack 1911 pads do not fit double-stack 2011 magazines.
Q: Which magwell for USPSA Limited?
The STI 2011 Limited Magwell (brass or aluminium). The Open magwell has a wider flare that may exceed Limited dimension requirements.
Q: Are thumb rests legal in all divisions?
Thumb rests are legal in Standard, Limited, and Open. Check your specific federation rules for Production and Classic.
Q: Bul Armory vs STI compatibility?
Most Boss Components 2011 accessories fit both STI/Staccato and Bul Armory frames. Check individual product pages for specific compatibility notes.
Q: Do I need the extended magazine release?
It significantly speeds up reloads. Highly recommended for any competitive shooter running a 1911 or 2011.
