User Ratings
No ratings yet
Be the first to review this product
SIG Sauer Cal-X Kit CALX-MCX-6B-300-TAP converts MCX rifles and MCX pistols to .300 AAC Blackout.
Kit includes a 6.75" tapered lug barrel.
Caliber: 300 AAC Blackout
Specifications
- Manufacturer:
- Sig Sauer
- Category:
- upper-parts-kit
- Caliber:
- .300 AAC Blackout
- Platforms:
- AR-15
- Length:
- 6.8"
- UPC:
- 798681579563
- MPN:
- CALX-MCX-6B-300-TAP
- Required Component:
- Yes
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$543.99
Lowest
$543.99
Highest
$543.99
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products
Aero Precision AR15 Upper Parts Kit APRH100270
Aero Precision
$18.39
Anderson Upper Receiver Parts Kit G2-K641-0000
Anderson Manufacturing
$14.99
Aero Precision 5.56 Assembled Upper Build Kit w/ Atlas R-One M-LOK Handguard
Aero Precision
$462.29
Wilson Combat AR-15 Upper Receiver Parts Kit (TR-UPPERK)
Wilson Combat
$36.13
AR-15 Upper Completion Kit
Kak Industry
$22.50
Luth-AR A3 Upper Receiver Parts Kit - URPK-A3
Luth-AR
$13.43
White Label Armory AR-15 WLA Master Parts Kit 5.56 NATO Black
White Label Armory
CMMG Bravo .22 Long Rifle AR-15 Drop-In Conversion Kit with 10-Round Magazine
Cmmg
$192.95
Builds Using This Part
No builds yet — be the first to use this part.