HK416 / MR556 Series
Our extensive collection boasts a wide array of HK MR556 and HK 416 parts, including precision HK MR556 Barrels and durable HK 416 Stocks. Elevate your rifle's functionality with HK 416 Handguards and HK MR556 Triggers, designed for the discerning shooter seeking top-tier performance.
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On Sale
HK416 Reaction Rod
Nefarious Arms
Now: $112.95Was: $124.95Nefarious Arms - Reaction Rod - HK416 The Nefarious Arms HK416 Reaction Rod is used to securely hold the upper receiver in a bench vise so that work may be performed on the muzzle device. It is inserted through the rear of the upper receiver to...HKP-21272Now: $112.95Was: $124.95 -
On Sale
Folding Grip - Quick Detach - Low Profile
UTG
Now: $49.95Was: $54.95UTG Quick Detach Low Profile Folding Grip Features: Unique knurled surface for the most solid grip Smart Posi-Lock cross bolt and spring tensioned locking plate with steel insert for the most secure installation Fully adjustable quick detachable...HKP-15029Now: $49.95Was: $54.95 -
On Sale
HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant
HKP HK Parts
Now: $21.95Was: $24.95HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant This muzzle device is a partially milled version (not completely milled) of the factory HK birdcage style flash hider found on the factory-correct HK models of rifles...HKP-12746Now: $21.95Was: $24.95 -
On Sale
HK416, MR556, G36, SL8 Gas Piston
Nefarious Arms
Now: $67.95Was: $74.95Nefarious Arms Gas Piston for HK G36, HK SL8, HK416 and HK MR556 A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated for corrosion resistance. Compatible...HKP-21364Now: $67.95Was: $74.95 -
Out Of StockOn Sale
HK416, MR556 Magazine Release Button
H&K Heckler & Koch
Now: $15.95Was: $16.95Heckler and Koch Magazine Release Button for HK416 and HK MR556 New HK German Manufacture. Compatible With: HK416, MR556 AR15, M4, M16 firearmsHKP-02656Now: $15.95Was: $16.95 -
On Sale
HK416, MR556, MR762 Bolt Catch Plunger
H&K Heckler & Koch
Now: $8.95Was: $9.95Heckler and Koch HK MR556 and HK416 Bolt Catch Plunger Compatible With: HK416, MR556 HK MR762HKP-02655Now: $8.95Was: $9.95 -
On Sale
HK416, MR556 Magazine Catch
H&K Heckler & Koch
Now: $53.95Was: $59.95Heckler and Koch Magazine Catch for HK416 and HK MR556 New HK German manufacture magazine catch for the HK 416 and MR556 family of firearms. Compatible With: HK416, MR556HKP-15458Now: $53.95Was: $59.95 -
On Sale
HKP 2 Point Leather Sling - OD Green
HKP HK Parts
Now: $44.95Was: $49.95HKP 2 Point Leather Sling - OD Green These new HK Parts 2-point slings are based off of the original German HK design that are no longer offered. This is a 1st time offering, handcrafted by a German artisan. Made in the USA from quality leather and...HKP-20164Now: $44.95Was: $49.95 -
On Sale
HK416, MR556 Piston Guide - Threaded - Upper Receiver
H&K Heckler & Koch
Now: $17.95Was: $19.95Heckler and Koch Upper Receiver Threaded Piston Guide for HK MR556 and HK416 Compatible With: HK416, MR556 M27HKP-02640Now: $17.95Was: $19.95 -
Barrel Chamber Flute Cleaning Brush - 5.56 / .223
H&K Heckler & Koch
$29.95New HK German .223/5.56 Chamber Flute Cleaning Brush This item is ideal to have on hand for cleaning the flutes of the barrel. The flutes have to remain clean for the rounds to be extracted properly.HKP-00464$29.95 -
On Sale
HK416, MR556 Ejector Port Cover Pin
H&K Heckler & Koch
Now: $17.95Was: $19.95Heckler and Koch Ejector Port Cover Axle Pin for HK416 and HK MR556 Compatible With: HK416, MR556HKP-02661Now: $17.95Was: $19.95 -
On Sale
HK416, MR556 Bolt Catch
H&K Heckler & Koch
Now: $53.95Was: $59.95Heckler and Koch HK MR556 and HK416 Bolt Catch New HK German manufacture. Compatible With: HK416, MR556HKP-02542Now: $53.95Was: $59.95