Receivers / Flats / Uppers
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HKP MP5 40/10 Receiver Flat
HKP HK Parts
$399.95MP5 40 & MP5 10mm Reciever Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of firearms. Compatible with: MP5 .40 Cal MP5 10mm MP5 ...HKP-00767$399.95 -
HKP HK MP5 9mm Receiver Flat
HKP HK Parts
$189.95HKP MP5, SP5 Receiver Flat - 9mm New MP5 receiver flat made by the original German tool and die maker of the LSC receiver flat utilizing factory original German prints and specifications. The creator of our receiver flat has been regarded as the premier...HKP-20921$189.95 -
On Sale
HKP MP5K/SP89/SP5K 9mm Receiver Flat
HKP HK Parts
Now: $139.95Was: $159.95HK U.S Made MP5K, SP5K, & SP89 Receiver Flat HK MP5K receiver flat (no FFL required) as these are flats and are not considered receivers until the flat is rolled. These are the latest generation flats that have all of the latest improvements. Just...HKP-00768Now: $139.95Was: $159.95 -
H&K HK G36 Backplate Complete w/ Recoil Assembly
H&K Heckler & Koch
$199.95HK G36 Backplate Complete With Recoil AssemblyNew HK German G36 Backplate with new G36/SL8 recoil buffer and recoil assembly. This assembly does include the recoil rod retaining screw. This is a great spare or replacement to have on hand. These are also...HKP-16735$199.95 -
Out Of Stock
H&K HK G36 Backplate w/ Recoil Buffer
H&K Heckler & Koch
$79.95HK G36 Backplate With Recoil Buffer This is a great spare or replacement to have on hand. These are also required for those that are doing the SL8-G36 conversions provided by Tommy Bostic & Chopstix Kid.HKP-01058$79.95 -
H&K HK MR556/416 Vented Slimeline Gas Block
H&K Heckler & Koch
$135.00HK German MR556, 416 Gas Block Complete - Low Profile This is the factory slim-line, low-profile gas block for the MR556/HK416. No bayo lug or sling attachment points. This is the factory correct gas block found on the MR556 firearm. This is also the...HKP-02660$135.00 -
HKP - MP5K, SP89 Receiver Flat With Weldment Set
HKP HK Parts
$239.95MP5K, SP89 Receiver Flat With Complete Weldment & Rivet Set New MP5K receiver flat and weldment set combined for the best complete build option on the market. Made by the original German tool and die maker of the LSC receiver flat utilizing factory...HKP-20882$239.95 -
HKP HK 93/53/33 (5.56 / .223) Receiver Flat With Weldment Set
HKP HK Parts
$229.95HK .223/556/300 BLK Receiver Flat With Complete Weldment Set Combo Each flat & weldment set comes with 223/556/300BLK complete as a builders combo ready to assemble. Each flat counts as one 922r compliant part. Compatible With: HK93,...HKP-00006$229.95 -
Out Of Stock
B&T HK G36/SL8 (5.56/.223) Rail w/ Flip Up Sights
B&T Brugger & Thomet
$359.95Swiss Made B&T G36 Picatinny Mounting Rail With Emergency Back-up Sights B&T Switzerland is an HK OEM manufacturer and produce top quality accessories for military and law enforcement around the world. This is a military grade...HKP-16894$359.95 -
Out Of Stock
H&K 416A5 RAL8000 Stripped Upper Receiver
H&K Heckler & Koch
$0.00HK German Un-Assembled Stripped HK 416A5 Upper Receiver - Ral 8000 Brand new factory German RAL8000 416A5 upper receiver. Compatible With: HK MR556 HK MR223 HK 416 Looking for a matching lower for your build? STS416 A5 LOWER - Specialized...HKP-18787$0.00 -
H&K MP5 Rear Receiver Section
H&K Heckler & Koch
$14.95H&K MP5 Rear Receiver Section HK German demilled receiver section with rear sight base as installed at the factory. MP5 & HK94 Factory HK rear sight bases (portion welded to MP5 receiver), you get the actual demilled section of an MP5 receiver...HKP-02167$14.95 -
H&K MP5K Replacement Buffer For Factory End Cap or Folding Stock
H&K Heckler & Koch
$24.95H&K MP5K Replacement Buffer for Factory End Cap or Folding Stock This item is a Heckler & Koch Genuine Part, used to replace the factory HK buffer on MP5K folding stocks and end caps. This is only usable on the factory OEM stock and end cap. This...HKP-01233$24.95 -
Tommy Built HK G36, HK SL8 Carry Handle Top Rail - Black
Tommy Built
$349.95G36 carry handle style top rail with rear Picatinny optics mount. This is designed to have the styling of the Iconic G36 carry handle optic rail with the flexibility of a simple pic rail so you can mount a modern compact optic. These are constructed of...HKP-19201$349.95 -
H&K HK G36/SL8 Complete Recoil Rod Assembly
H&K Heckler & Koch
$49.95Recoil Rod Assembly for HK G36 & SL8 New HK factory German G36/SL8 (fits all variants of SL8/G36) recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find.HKP-01057$49.95 -
H&K HK MR762 Lower Receiver Front Locking Pin - Black
H&K Heckler & Koch
$39.95HK MR762 Locking Pin With Spring Loaded Detent. This is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and improve the...HKP-16602$39.95 -
Out Of Stock
HK G36 Backplate Complete w/ Recoil Assembly
USA
$84.95HK G36 Backplate Complete With Recoil AssemblyNew G36 Backplate with new G36/SL8 recoil buffer and recoil assembly. This assembly does include the recoil rod retaining screw. This is a great spare or replacement to have on hand. These are also required...HKP-18537$84.95 -
HK G36 Single Optic Carrying Handle - Incomplete - HKP
$149.95HK G36, SL8 Single Optic Carrying Handle Incomplete (stripped) perfect for replacement of your well worn housing or broken housing Just install your optic and you have a like new unit.HKP-16365$149.95 -
HK G36/SL8 Complete Recoil Rod Assembly
USA
$39.95Recoil Rod Assembly For All - HK G36 & SL8 New G36/SL8 (fits all variants of SL8/G36) recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find.Made 100% in the USAHKP-18539$39.95 -
B&T BT TP9 Top Cover w/ Side Mounting Rail
B&T Brugger & Thomet
$159.95B&T TP9 Top Cover Complete with Side Mounting RailHKP-17293$159.95 -
On Sale
B&T SIG SG 550 Series Mount
B&T Brugger & Thomet
Now: $99.95Was: $124.95B&T Mounting Rail NAR Low Profile Mount for SIG SG 550/551/552/553 Specifications: Color: Black Height max: 16 mm Length max: 152 mm Length of top rail: 152 mm Material: Aluminum & Steel NATO Accessory Rails: 1 Treatment: Hartcoat anodized &...HKP-16866Now: $99.95Was: $124.95 -
HKP HK MP5 Rear Receiver Section
H&K Heckler & Koch
$24.95HK MP5 Rear Receiver Section HK German demilled receiver section with rear sight base as installed at the factory. The rear push pin section is still attached to the demilled receiver section.HKP-02147$24.95 -
Out Of Stock
B&T HK 91/G3 (7.62x51 / .308) Low Mount Removable Side Rails - Extended
B&T Brugger & Thomet
$289.95B&T HK 91/G3 (7.62x51 / .308) Low Mount Removable Side Rails - Extended Swiss Made, Military Grade B&T G3 Low Profile Scope Mount- G3, 91 & PTRGerman long version with removable side rails. First made for the German army, these are in use by...HKP-16872$289.95 -
B&T MP5, MP5K Low Mount For Trijicon ACOG
B&T Brugger & Thomet
$169.95B&T Mounting Rail NAR for HK MP5 & MP5K with Tijicon ACOG Compatible With: HK MP5 & SP5 HK MP5K & SP5K In spec. clones and builds Specifications: Color: Black Height max: 31.5 mm Length max: 84 mm Material: Aluminum Treatment: Hartcoat...HKP-17284$169.95 -
H&K HK MR556/MR223 Upper Receiver w/ F/A & Ejection Door
H&K Heckler & Koch
$694.95New HK German Partially Pre-Assembled MR556/MR223 Upper Receiver Each unit comes just as shown with the F/A (forward assist) assembly and ejection port door assembly installed from the HK factory. Compatible With: HK MR556 HK MR223 HK...HKP-16950$694.95 -
H&K MP5 & SP5 A1 End Cap With Sling Swivel
H&K Heckler & Koch
$139.99HK German MP5 & SP5 A1 End Cap With Sling Swivel The MP5 end cap allows the user to add a single-point sling. Perfect for a pistol build or a lower profile setup. Made by HK Germany. Compatible with: HK MP5 HK SP5 HK94 MP5 clones and other...HKP-00114$139.99 -
HK SL8, HK G36 Full Size Aftermarket Complete Bottom & Side Rail Set - Black
USA
$69.95HK SL8/G36 Full Size Aftermarket Bottom & Side Rail Set Complete Comes with the bottom and 2 side rails (left and right) as well as the screws and allen wrench. Made of aircraft-grade aluminum and laser marked for easy number identification. New and...HKP-00633$69.95 -
HKP HKMP5K 9mm Flat Receiver - Silver
HKP HK Parts
$199.95MP5K, SP89 Receiver Flat - 9mm New MP5K receiver flat made by the original German tool and die maker of the LSC receiver flat utilizing factory original German prints and specifications. The creator of our receiver flat has been regarded as the premier...HKP-20733$199.95 -
HKP MP5K 40/10 Receiver Flat
HKP HK Parts
$199.95MP5K-40, MP5K-10 Receiver Flat - USA Receiver Flat for use with a MP5K-40 or MP5K-10mm build. Please note: This is for the flat as picture no weldments are included. ***This US made receiver flat counts as one required 922R compliant part***HKP-18033$199.95 -
Out Of Stock
H&K MP5K/SP89/SP5K 9mm Incomplete End Cap
H&K Heckler & Koch
$0.00HK Factory German MP5K, SP-89, SP5K End Cap - Incomplete Each Pistol End Cap Is OEM HK German MP5K, MP5K-N, SP5K, SP89 stripped end cap. Will Fit All HK MP5K, PDW Or SP89 & Clone Type Variants. Compatibile With: MP5K SP89 SP5K MP5K-N MP5K-PDW MP5K...HKP-18208$0.00 -
B&T MP5, 94 Low Mount, Extra Long Scope Rail
B&T Brugger & Thomet
$239.95B&T MP5, 94 Low Mount, Extra Long Scope Rail Swiss made, military grade, B&T MP5 extra long low-profile scope mount. Requires the removal of the MP5 rear sight. Provides the longest possible picatinny rail. Specifications: Color: Black Height...HKP-16881$239.95 -
B&T TP9 Picatinny Brass Catcher Side Rail
B&T Brugger & Thomet
$55.95B&T TP9 Picatinny Brass Catcher Side Rail New Swiss Made. Fits the brass cather for the TP9, MP9 firearms. Please note that the hardware is not included as they are riveted on at the B&T factory in most cases before shipping however, the M4X12...HKP-17296$55.95 -
Tommy Built HK G36 Low Rise Top Rail - Black
Tommy Built
$249.95G36, SL8 LOW RISE TOP RAIL - Tommy Built Tactical Billeted aluminum low-rise top rail for the SL8-6 & G36 series of rifles. This is the perfect mounting solution for optics. Crafted from the combat grade aluminum with a hard-coat anodized finish...HKP-20961$249.95 -
Out Of Stock
H&K HK G36 Complete 3X Single Optic Carrying Handle
H&K Heckler & Koch
$695.99Brand New HK G36 Factory German 3X Single Optic Carrying Handle - Complete. Mounting hardware offered separately.HKP-16388$695.99 -
Out Of Stock
MM HK PSG1/MSG90/91/G3 (7.62x51 / .308) T-Rail Reinforcement Set For Receiver
Michaels Machines
$295.99HK Receiver Reinforcement T-Rail Set For Left and Right Sides T-rails are used to strengthen HK receivers or for custom builds. These are the finest T-rails available on the market. Made from enhanced steel and perfect for that custom HK project...HKP-00236$295.99 -
Out Of Stock
H&K G36/SL8 (5.56/.223) Dual 3x Optic Carrying Handle - New
H&K Heckler & Koch
$2,899.95HK G36, SL8 Dual Optic - New Rare in brand NEW condition. Brand new factory fresh HK G36/SL8 3X dual optic. In all the years, of offering HK parts and accessories...we have never been able to get brand new dual optics directly from HK Germany.Update: HK...HKP-17606$2,899.95 -
B&T HK G36/SL8 (5.56/.223) Mounting Rail
B&T Brugger & Thomet
$149.95B&T HK G36/SL8 (5.56/.223) Mounting Rail B&T Mounting Rail NAR for HK G36, SL8 HK carrying handle, Spanish Military Version. B&T Switzerland is an HK OEM manufacturer and produces top quality accessories for military and law enforcement...HKP-16867$149.95 -
H&K HK MR762 Upper Receiver - Incomplete
H&K Heckler & Koch
$899.95HK MR762, HK 417 Incomplete Upper Receiver This stripped upper receiver includes the insalled threaded piston guide bushing.HKP-16624$899.95 -
HKP HK 416, MR556 Upper Receiver Forging
HKP HK Parts
$99.95HK Parts' very own 416 upper reciever forging. This is the first time that these forgings have been made available to the public. Our receivers come with the ever popular Cerro Forge "keyhole" marking. Cerro Forge is a premier manufacturer of forged...HKP-21008$99.95 -
B&T BT TP9, BT MP9 Polymer Quick Detach Brass Catcher - Black
B&T Brugger & Thomet
$197.95B&T BT TP9, BT MP9 Polymer Quick Detach Brasscatcher - Black This is the new style brass catcher that only fits new style TP9 top covers. Specifications: Color: Black Height max: 102.2 mm Length max: 122 mm Material: Polymer Mounting: Weapon must be...HKP-17286$197.95 -
B&T HK G36, HK SL8 Extended Scope Mount - Black
B&T Brugger & Thomet
$149.95B&T Mounting Rail NAR for HK G36 carrying handle, Portugese Military Version Swiss made B&T G36 mounting rail for HKG36 carrying handle, Portuguese army version. B&T Switzerland is an HK OEM manufacturer and produces top quality accessories...HKP-16892$149.95