Specials
The Parts Steamboat Actually Runs
Finish Your Build
You grabbed the lower — here’s everything else it takes to finish the job. Best-selling barrels, triggers, uppers, stocks, BCGs and optics, in stock and ready to ship. Parts aren’t the regulated firearm, so there are no new hoops.
Shop the BuildTalk to a Builder
Best-sellers, in stock
Ships fast
Local pickup in Steamboat
Gunsmith on site
The brands you build with
MagpulGeisseleDaniel DefenseSureFireSIG SauerHolosunRadianBCMTimneyPROOF Research
Magazines — Colorado Legal
Magpul
PMAG GEN M3 · 5.56 · 10rd
$18View product→
Max Legal Capacity
Lancer
L5AWM · .223/5.56 · 15rd
$25View product→
AR-10 / .308
Magpul
PMAG GEN M3 · 7.62/.308 · 10rd
$23View product→
All magazines shown hold 15 rounds or fewer — legal to ship to any Colorado address. Higher-capacity magazines are in-store only.
Triggers
Shop all triggers →
#1 Trigger
Geissele
SSA-E 2-Stage Trigger
$245View product→
Top Seller
Geissele
G2S 2-Stage Trigger
$175View product→
Save $176Only a few left
Timney
Tavor 2-Stage Trigger
$284$460.99View product→
Bolt Carriers & Charging Handles
Shop all BCGs →
Top SellerOnly a few left
Daniel Defense
5.56 Bolt Carrier Group
$270View product→
Top Seller
Radian
Raptor-SD Ambi Charging Handle
$134.95View product→
On Sale
FailZero
M16 5.56 Full-Auto BCG
$149$169.99View product→
Uppers
Shop all uppers →
Shop Favorite
Radical Firearms
16″ 5.56 1:7 M-LOK Complete Upper
$349$399.99View product→
On Sale
Ruger
AR Complete Upper Assembly
$123$169.95View product→
Premium
Geissele
URG-I & Super Duty uppers — restocking
See allShop uppers→
Stocks, Braces & Buffers
Magpul
CTR Carbine Stock
$66.45View product→
Top Seller
Geissele
Super 42 H3 Buffer & Spring Kit
$143View product→
Save $27
SB Tactical
SBM4 Pistol Stabilizing Brace
$48$74.99View product→
Muzzle Devices
Shop all muzzle devices →
Top Seller
SureFire
4-Prong Flash Hider · 5.56 1/2×28
$187View product→
Save $98
SureFire
SOCOM Flash Hider · 5/8×24
$101$199View product→
More
ERG
Brakes, comps & QD mounts
See allShop muzzle devices→
Red Dots & Optics
SIG Sauer
Romeo5 Gen II · 2 MOA Red Dot
$137$149.99View product→
Save $96
Holosun
HS407CX2 · 2 MOA Red Dot
$192$288.22View product→
Save $122
Canik
Mecanik MO2 Red Dot
$118$239.99View product→
Lower Parts Kits & Small Parts
Shop all parts kits →
Top Seller
CMMG
AR-15 Builder Lower Parts Kit
$40View product→
Top Seller
Geissele
Ultra Duty LPK · Ambi Safety
$153View product→
Top Seller
Breek Arms
Warhammer MOD2 Charging Handle
$49.95View product→
Pistol Upgrades
Shop all pistol barrels →
Top SellerOnly a few left
Radian
Ramjet + Afterburner Comp Barrel · SIG P365
$422View product→
Also fits Glock
Radian
Ramjet comps for Glock 43X & more
See allShop pistol barrels→
Upgrade
Timney & more
Carry & competition pistol triggers
See allShop pistol triggers→
Building a 6mm ARC?
One of our fastest-moving calibers — and we stock both ends of it. Grab a match-grade PROOF Research carbon-fiber barrel and feed it Hornady 108gr ELD Match, in stock now.
PROOF 6 ARC Barrel · $794Hornady 6 ARC Ammo · $33
The Reloading Bench Is Stocked
Primers, powder, bullets, dies and presses — one of the busiest corners of the shop. Restock before the next range day.
Build It Right.
The parts Steamboat actually runs — in stock, priced fair, backed by a gunsmith who can help you put it all together. Order online or come see us.
Shop the BuildGet Directions
A quick note on the new law. Colorado’s SB25-003 covers certain complete semi-automatic firearms — not the parts that go into a build. Barrels, uppers, triggers, stocks, handguards, optics and accessories ship the way they always have. Questions about your specific build? Call the shop or stop in — happy to walk through it.