H&K Castle Nut Fits 416/MR556, Black

Gun Parts H&K UPC 642230249349 MPN 50233165

H&K Castle Nut Fits 416/MR556, Black
$32.64

at E-Commerce Arms · checked 27 minutes ago

Shipping calculated in cart

View at E-Commerce Arms →

5 retailers · $32.64 to $35.49 in stock

This listing: Palmetto State Armory $34.89

Offers

NUT, RECEIVER EXTENSION, HK416
E-Commerce Arms In Stock Checked 27 minutes ago Condition: New
$32.64 + shipping in cart
History
Heckler and Koch HK416 Receiver Extension Nut
GrabAGun In Stock Checked 4 hours ago
$34.79 + shipping in cart
History
H&K Castle Nut Fits 416/MR556, Black
Palmetto State Armory In Stock Checked 13 days ago SKU 51655210335
$34.89 + shipping in cart
History
Heckler & Koch HK Black Steel Receiver Extension Nut for MR556A1/HK416
Ammunition Depot In Stock Checked 2 hours ago
$35.49 + shipping in cart
History
Heckler & Koch 416 Nut, Receiver Extension, Hk416 - Nut, Receiver Extension, Hk416
Brownells Out of Stock Checked 7 days ago
$34.99 + shipping in cart
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
$32.64
Typical price
$32.64
Tracked since
Apr 9, 2026

Today's best price matches the 214-day low and is about typical.

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