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 A3 Handguard - Flip Up Sight - 11" - Extended
H&K Heckler & Koch
Now: $719.95Was: $799.95Heckler and Koch Extended Forearm with Integrated Flip Up Front Sight for HK 416 A3 HK designed and manufactured in Germany 11" HK416 A5, MR556 extended quad rail. This drop-in unit offers 2 full inches in extra length. Not the standard 9" rail that...HKP-17377Now: $719.95Was: $799.95 -
On Sale
B&T 1/2x28 Direct Thread to Hub Adapter
B&T Brugger & Thomet
Now: $80.95Was: $89.95B&T Direct Thread 1/2x28 Hub Adapter Convert any 1/2x28 RH threaded barrel to accept Hub devices with this direct fit adapter. Compatible With: HK MP5, MP5K, SP5, SP5K HK MR556 HK UMP 9mm B&T APC223, SPC223 B&T APC9K B&T GMH9...HKP-21506Now: $80.95Was: $89.95 -
On Sale
Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S
Frost Defense
Now: $215.95Was: $239.95Aimpoint ACRO P-2, C-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint ACRO P2/C2 red dot sights. This patent-pending mount system provides robust glare and impact protection by surrounding the...HKP-22341-MNow: $215.95Was: $239.95 -
On Sale
HK416, MR556 Super Modular Handguard - 10.5" - M-LOK - DDC
Geissele
Now: $422.95Was: $468.95Geissele 10.5" M-LOK Handguard - DDC for HK416 The super modular rail HK416 MK15 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates the strength,...HKP-20225Now: $422.95Was: $468.95 -
On Sale
Harris Bipod Adapter - Long - Picatinny
HKP HK Parts
Now: $31.95Was: $34.95Harris Bipod Adapter This mounts to any Picatinny rail and proves a stable platform to add a Harris bipod or other similar-style bipod. This will fit any Picatinny spec rail or rail system. Made in the US out of aircraft-grade aluminum and steel.HKP-00909Now: $31.95Was: $34.95 -
On Sale
HK MP5, MP5K Optic Mount, ACRO P-1, P-2 - Picatinny
HKP HK Parts
Now: $89.95Was: $98.95HKP HK MP5, MP5K Aimpoint ACRO Picatinny Sight Mount The HKP Aimpoint ACRO Picatinny mount is a rugged, low-profile solution for mounting your ACRO red dot sight. Designed to fit any firearm with a Picatinny rail. It ensures a secure fit, optimal sight...HKP-22067Now: $89.95Was: $98.95 -
On Sale
HK MG5 Unigrip QD with Bipod
B&T Brugger & Thomet
Now: $215.95Was: $239.95B&T HK MG5 Unigrip QD with Bipod This grip is made for the HK MG5 but is very versatile and can attacht to any firearm that has a forearm with a picatinny rail. It is primarily a foregrip, but due to the integrated bipod (which can be deployed...HKP-21051Now: $215.95Was: $239.95 -
On Sale
HK416, MR556 Ejector Spring
H&K Heckler & Koch
Now: $35.95Was: $39.99Heckler and Koch HK416 and HK MR556 Ejector Spring Compatible With: HK 416, MR556HKP-02538Now: $35.95Was: $39.99 -
On Sale
HK416, MR556, G36 Barrel Chamber Cleaning Brush
HKP HK Parts
Now: $21.95Was: $24.95HK G36 & HK SL8 German Chamber Cleaning Brush (Cleans INSIDE Chamber) More details...HKP-00803Now: $21.95Was: $24.95 -
Out Of Stock
HK416, MR556, AR-15 PDWC Stock - Extended Buttpad
HKP HK Parts
$0.00HK 416C Style With Extended Buttpad - PDW Stock For AR15, MR556, HK416 & M4 Models The first PDW style stock that does NOT require a proprietary bolt carrier or special components. A true drop-in PDW stock solution for your HK 416C or AR/M4 PDW...HKP-17800$0.00 -
On Sale
HK416, MR556, HK417, MR762 Handguard Locking Screw - A4 Style
H&K Heckler & Koch
Now: $20.95Was: $22.95HK416, MR556, HK417, MR762 - A4 - Handguard Locking Screw Replacement locking screw that secures the A4 handguard to the upper receiver. Compatible With: HK HK416 A4 HK MR556 A4 HK HK417 A4 (2 required per handguard) HK MR762 A4 (2 required...HKP-22304Now: $20.95Was: $22.95 -
On Sale
HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light
Nefarious Arms
Now: $535.95Was: $594.95Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or pistol build. Compatible With: HK 416 A1,...HKP-21589Now: $535.95Was: $594.95