Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4 by Hk -

Price history at DEGuns

Price at DEGuns unchanged at $2,179.00 since Oct 9, 2026. Last checked Oct 30, 2026.

Product Description

Product Features & Specifications HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4 This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 5.56mm AR-style rifles to be retrofitted to HK's piston and pusher rod system. This system utilises a piston and a pusher r

HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4

at DEGuns
Browse all DEGuns deals
$2179.00
In Stock at DEGuns
Price checked 12 days ago
Buy Now at DEGuns
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Hk
MPN 51000385
Hk

Price history at DEGuns

Price at DEGuns unchanged at $2,179.00 since Oct 9, 2026. Last checked Oct 30, 2026.

More from Hk

DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK Magazine, 15+1 Black Polymer 9mm Fits H&K SP5/SP5K - 215610S HK Magazine, 15+1 Black Polymer 9mm Fits H&K SP5/SP5K - 215610S View Details
$86.09
Buy Now · $86.09
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK Thread Cap, Black M16x1 RH Thread 45 ACP Fits HK Mark 23 - 970174 HK Thread Cap, Black M16x1 RH Thread 45 ACP Fits HK Mark 23 - 970174 View Details
$29.19
Buy Now · $29.19
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK USP Magazine, Black Detachable w/ Extended Floor Plate 12rd 45 ACP - 50248618 HK USP Magazine, Black Detachable w/ Extended Floor Plate 12rd 45 ACP - 50248618 View Details
$43.69
Buy Now · $43.69
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK VP9SK/P30SK 10rd Extended 9mm Luger Black Steel 50253428 HK VP9SK/P30SK 10rd Extended 9mm Luger Black Steel 50253428 View Details
$43.69
Buy Now · $43.69
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK 50223214 P2000 Black Detachable w/ Extended Floor Plate 10rd 9mm Luger (Subcompact) HK 50223214 P2000 Black Detachable w/ Extended Floor Plate 10rd 9mm Luger (Subcompact) View Details
$43.69
Buy Now · $43.69
DEGuns
DEGuns
Last Updated:
Oct 30, 2026 04:43 AM
HK 50259192 VP9CC 9mm 10rd Mag Extended Floorplate HK 50259192 VP9CC 9mm 10rd Mag Extended Floorplate View Details
$43.69
Buy Now · $43.69
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
H&K Ambidextrous Control Lever Kit, Black Polymer for HK 45/45C - 241594 H&K Ambidextrous Control Lever Kit, Black Polymer for HK 45/45C - 241594 View Details
$56.99
Buy Now · $56.99
DEGuns
DEGuns
Last Updated:
Oct 30, 2026 04:43 AM
Heckler & Koch USP45 Tactical Threaded Barrel, 5.09" Black Steel M16x1 LH Thread 45 Cal - 226349 Heckler & Koch USP45 Tactical Threaded Barrel, 5.09" Black Steel M16x1 LH Thread 45 Cal - 226349 View Details
$254.99
Buy Now · $254.99
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK 261249 SP5K Black Polymer/Steel Folding HK 261249 SP5K Black Polymer/Steel Folding View Details
$367.99
Buy Now · $367.99
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK VP9CC 10rd 9mm Luger 50257144 HK VP9CC 10rd 9mm Luger 50257144 View Details
$43.69
Buy Now · $43.69
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK VP9A1 10rd 9mm Luger Fits HK VP9A1 K Black 50249835 HK VP9A1 10rd 9mm Luger Fits HK VP9A1 K Black 50249835 View Details
$43.69
Buy Now · $43.69
DEGuns
DEGuns
Last Updated:
Oct 30, 2026 04:43 AM
HK VP9/P30 Magazine, Black Steel Detachable 15rd 9mm Luger Fits HK VP9 - 50227869 HK VP9/P30 Magazine, Black Steel Detachable 15rd 9mm Luger Fits HK VP9 - 50227869 View Details
$46.79
Buy Now · $46.79
DEGuns
DEGuns
Last Updated:
Oct 30, 2026 04:43 AM
HK MR556 Upper Receiver Kit, 16.50" Black 5.56mm for AR15/M16/M4 - 51000384 HK MR556 Upper Receiver Kit, 16.50" Black 5.56mm for AR15/M16/M4 - 51000384 View Details
$2179.00
Buy Now · $2179.00
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK HK USP Match Trigger Kit, Black Steel 9mm/40 S&W/45 ACP - 216169R HK HK USP Match Trigger Kit, Black Steel 9mm/40 S&W/45 ACP - 216169R View Details
$129.99
Buy Now · $129.99
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK HK45 Tactical Threaded Barrel, 5.20'' Black For 45 ACP - 51000983 HK HK45 Tactical Threaded Barrel, 5.20'' Black For 45 ACP - 51000983 View Details
$252.99
Buy Now · $252.99
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK HK45C Tactical Threaded Barrel, 4.57" L Black 45 Cal - 51000982 HK HK45C Tactical Threaded Barrel, 4.57" L Black 45 Cal - 51000982 View Details
$172.99
Buy Now · $172.99
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK SL8 / USC Picatinny Receiver Rail, Black Aluminum Fits HK USC/HK SL8/HK UMP - 702393 HK SL8 / USC Picatinny Receiver Rail, Black Aluminum Fits HK USC/HK SL8/HK UMP - 702393 View Details
$70.39
Buy Now · $70.39
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK Thread Cap, Black Steel Pistol 40 Cal - 970173 HK Thread Cap, Black Steel Pistol 40 Cal - 970173 View Details
$31.19
Buy Now · $31.19
DEGuns
DEGuns
Last Updated:
Nov 08, 2026 09:13 AM
HK SL8 / USC Aluminum Picatinny Forearm Rail, Black Rifle .223 Rem/5.56x45mm/.45 ACP - 702390 HK SL8 / USC Aluminum Picatinny Forearm Rail, Black Rifle .223 Rem/5.56x45mm/.45 ACP - 702390 View Details
$65.49
Buy Now · $65.49
DEGuns