Sig Sauer MPX Caliber Exchange Kit Black 9mm 4.5-inch

Kit Sig Sauer UPC 798681555062

Sig Sauer MPX Caliber Exchange Kit Black 9mm 4.5-inch
$666.99

at Good 4 Guns ·

Shipping calculated in cart

View at Good 4 Guns →

7 retailers · $666.99 to $734.85 in stock

This listing: GrabAGun $709.99, out of stock

Offers

Sig Sauer MPX Gen II 9mm Caliber Exchange Kit
Good 4 Guns In Stock Checked 29 minutes ago Condition: New
$666.99 + shipping in cart
History
Sig Sauer MPX 4.5 Gen 2 Barrel Nitride Carbon Steel
Ammunition Depot In Stock Checked 6 hours ago
$698.99 + shipping in cart
History
Sig Sauer G2 Caliber Exchange Kit for Sig MPX Gen II, Black - CALX-MPX-4B-9-G2
Palmetto State Armory In Stock Checked 12 days ago
$723.99 + shipping in cart
History
SIG SAUER MPX Caliber Exchange Kit 9mm 4.5" Black Nitride
Kentucky Gun Co In Stock Checked 5 hours ago
$748.79 $734.85 + $13.94
History
Sig Sauer CAL-X KIT, SIGMPX, 9MM, 4.5 IN, G2
BattleHawk Armory Out of Stock Checked 6 hours ago
$658.49 + shipping in cart
History
Sig Sauer MPX Caliber Exchange Kit Black 9mm 4.5-inch
GrabAGun Out of Stock Checked 11 days ago SKU GAG_RES-SGCALX-MPX-4B-9-G2
$709.99 + shipping in cart
History
SIG SAUER Sig MPX Gen 2 Caliber X-Change Kit 9 mm 4.5 in
Optics Planet Out of Stock Checked 3 hours ago
$749.99 + free shipping
History

Shipping estimate for one item to the lower 48 from the retailer's published policy or feed; the retailer's cart is final.

Price history

Lowest price across retailers each day.

Lowest seen
$658.49
Typical price
$666.99
Tracked since
Apr 10, 2026

Today's best price is $8.50 above the 214-day low and about typical.

Embed this chart

A live price-history image, updated as we track new prices. Paste the snippet that matches where you're posting.