1911/STI 2011 Competition Upgrade Kit
Engineered for serious IPSC and USPSA shooters, this Boss Components bundle combines two of our most sought-after upgrades for 1911/STI 2011 platforms—our precision Red Dot Scope Mount and adjustable Thumbrest.
What's Included:
Red Dot Scope Mount – A-version or B-version multi-optic compatible mount with built-in blast shield and 1° down pitch for faster dot acquisition under match stress.
Adjustable Thumbrest – Fully adjustable pitch and lateral positioning for personalized control and recoil management. Available in anodized or plated finishes.
Built for Precision & Speed
This competition-grade setup provides faster sight tracking, and stable grip indexing—giving you the advantage stage after stage. Compatible with all standard 1911 and STI 2011 frames featuring .375" hole spacing.
Why This Kit?
Purpose-Built for IPSC & USPSA match conditions
Multi-optic compatible mount supports Trijicon, C-More, and more
Three-position adjustable thumbrest for dominant-hand advantage
High-strength materials with anodized or plated finishes
Precision CNC machining for rock-solid alignment
Shooter Notes:
Mounting screws is not included– use the screws supplied with your red dot optic.
The adjustable thumbrest requires two longer screws of the same thread size for proper installation. Mounting screws is not included.
We recommend using blue Loctite on all mounting screws.
Shop Red Dot Scope Mount
Shop Adjustable Thumbrest
Boss Components. By shooters, for shooters. Built for your edge.