Receivers/Flats/Uppers
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HKP MP5 Replacement Buffer for Folding Stock or End Cap
HKP HK Parts
$3.49HKP MP5 Replacement Buffer for Folding Stock or End Cap Spare Replacement Buffer For Choate Folding Stocks Or End caps. Compatible With: Choate MP5 and MP5K stocks or end capsHKP-18735$3.49 -
Choate MP5 & HK94 End Cap & Sling Swivel
Choate
$36.95Choate MP5 & HK94 End Cap and Sling Swivel 100% US-made MP5 and HK94 end cap features an extra thick heavy-duty rubber buffer that is replaceable with a simple screwdriver. Each HK end cap also features a sling swivel for use with all types of slings...HKP-00115$36.95 -
Semi Auto Shelf For Receiver - Billeted
$19.95Semi Auto Shelf For Receiver - Billeted HK Semi Auto Shelf milled from one solid billet to HK's factory specifications (no castings here). This is the needed receiver shelf that is welded to the receiver to allow the use of the clipped & pinned...HKP-01521$19.95 -
PTR HK 91/G3 (7.62x51 / .308) Receiver Flat
PTR
$99.95HK G3, 91, PTR & Cetme Flat - PTRThe PTR line of flats is considered to be the finest flat available. Each flat is made on tried & true HK factory tooling.Brand New HK91/G3/PTR91 or CETME receiver flat . Made by PTR on original HK tooling using...HKP-02320$99.95 -
Out Of Stock
B&T MP5, MP5K Low Mount For T1/H1 & T2 Aimpoint
B&T Brugger & Thomet
$99.95B&T MP5, MP5K Low Mount For T1/H1 & T2 Aimpoint Fits all HK MP5, MP5K variants. Ideal for use with the Aimpoint line of T-1/T2 & H-1/H2 type of optics. This mount is the lowest low profile mount available for use with the T1/T2 style of...HKP-16862$99.95 -
PTR HK 91/G3/51 (7.62x51 / .308) Flat With Weldment Set
PTR
$166.95HK91, G3, PTR, CETME Flat & Weldment Combo - PTRBrand New HK91/G3/PTR91 or CETME receiver flat with brand new US weldment set offered as a complete package. Made by PTR91 on original HK tooling using factory specifications and a properly stamped...HKP-02086$166.95 -
HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Enhanced Top Receiver Rail
HKP HK Parts
$49.95HK USC, UMP Top Receiver Rail With Hardware. The Extended Length Allows The Use Of All Optics That Fit On A Picatinny Rail. This unit has a contoured no snag design for ease of use and a beautiful fit. Made in the USA. Made from billet machined aluminum...HKP-14541$49.95 -
HKP Flat Bending Billeted Jig Set For All HK Style Flats
HKP HK Parts
$449.95NEW LATEST 4th GENERATION VERSION AND DESIGN. THE FINEST JIG SET AVAILABLE! 100% USA billeted universal flat bending jig for all HK receiver flats including our new PTR .308 flats and the PTR/LSC flats. Each bending jig comes complete with all the...HKP-19583$449.95 -
Out Of Stock
HKP Semi Auto Shelf, Hanger Block For Receiver
HKP HK Parts
$13.95HK Semi Auto Shelf Weldment, Hanger Block Weldment HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to the rearward portion of the magwell to allow the...HKP-17572$13.95 -
Choate MP5 Replacement Buffer For Folding Stock Or End Cap
Choate
$3.95Choate MP5 Replacement Buffer For Folding Stock Or End Cap Compatible With: Choate MP5 and MP5K stocks or end capsHKP-00116$3.95 -
HKP Spare Buffer For Folding Stocks & End Caps
HKP HK Parts
$9.95HKP Spare Buffer For Folding Stocks & End Caps New US manufactured flat style "H"buffer to replace the factory HK buffer on MP5K folding stocks and end caps. As well as a spare or replacement buffer for the MP5 & MP5K folding B&T stocks. Made...HKP-17886$9.95 -
H&K Magazine Catch - MP5, MP5K - Latest Style
H&K Heckler & Koch
$54.95H&K Magazine Catch - Latest Style Genuine HK mag release for factory and clone firearms. This component often resolves issues with mags not locking into position on HK clones and builds. Constructed from a single piece of steel unlike the...HKP-00911$54.95 -
B&T G3/91, 33/93, MP5/94 - Universal Scope Mount
B&T Brugger & Thomet
$119.95B&T G3/91, 33/93, MP5/94 - Universal Scope Mount Color: Black Height max: 35.5 mm Length max: 138 mm Length of top rail: 138 mm Material: Aluminum MSN: 5340-25-149-2979 NATO Accessory Rails: 1 Part number: BT-21262-1 Treatment: Hartcoat...HKP-16878$119.95 -
Chaote HK MP5K QD End Cap with Buffer - Black
Choate
$44.95Quick Detach MP5K, SP-89 Steel End Cap With Replaceable Rubber Buffer Fits all HK SP89 & MP5K pistols and rifles. Fits perfectly on all HK MP5K type builds or projects. Compatible With: MP5K SP89 Clone or other custom buildsHKP-20117$44.95 -
HKP MP5/HK94 Complete Weldment Set For Receiver Flat
HKP HK Parts
$49.95HKP MP5/HK94 Complete Weldment Set For Receiver Flat This is the finest, most correct weldment set for your HK MP5, 94 project available. Each Weldment Kit Contains: 1x Semi Auto Shelf Hanger Block 1x Rear stock bushing 1x Scope mounting piece 1x...HKP-01453$49.95 -
LSC/PTR Receiver Flat- MP5 9mm
LSC
$224.95MP5 Receiver Flat - PTR/LSC New PTR 9mm Receiver Flat made on the original LSC tooling. This flat is considered by many to be the most sought-after HK flat available on the market and perfect for that HK custom build. This item is not considered an FFL...HKP-01431$224.95 -
Flat Bending Jig Set For All HK Style Flats - Billeted - All Steel
$599.95NEW LATEST 4th GENERATION 100% ALL STEEL VERSION AND DESIGN. THE FINEST JIG SET AVAILABLE! All steel billeted universal flat bending jig for all HK receiver flats including our new PTR .308 flats and the PTR/LSC flats. Each bending jig comes complete...HKP-19595$599.95 -
H&K HK MR556 Rear Lower Receiver Locking Pin
H&K Heckler & Koch
$59.95HK MR556, MR762 Locking Pin With Spring Loaded DetentFor the MR556 & MR762 or other AR15 Variants. This is the Rear takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the...HKP-02672$59.95 -
H&K HK MR556/MR762/416//417 Complete Piston Rod Assembly
H&K Heckler & Koch
$64.95H&K HK MR556/MR762/416//417 Complete Piston Rod Assembly A great replacement or spare to keep on hand. Compatible with: HK MR556 HK 416 HK 416 A5 MR762 HK 417 Does not fit barrels less than 10 inches.HKP-00042$64.95 -
HKP MP5 End Cap with Sling Swivel
HKP HK Parts
$84.95HK Alloy Pistol End Cap with Sling Swivel Made from solid billet aircraft grade aluminum with the HK German sling loop and rubber heavy duty H buffer. With the alloy construction this unit will not break like the plastic end caps. Compatible...HKP-18138$84.95 -
LSC MP5 9mm Receiver Flat
LSC
$199.95MP5 Receiver Flat -LSCLSC HK MP5 receiver flat is the most in spec flat that has ever been available. The best option for your HK German parts kit build.This flat is considered by many to be most sought after HK flat available on the market and perfect...HKP-20555$199.95 -
H&K G3 Parts Kit - PTR Barrel & Flat
H&K Heckler & Koch
$799.95HK German G3 .308/7.62 X 51mm Surplus Parts Kit, PTR Barrel, Flat HK German G3 .308/7.62 X 51mm Surplus Parts Kit, PTR Barrel, FlatFinally, after more than 4 years of searching the globe we have HK German Surplus G3 parts kits available to offer. Each...HKP-16579$799.95 -
PTR HK MP5 Flat Receiver w/ Weldment Set
PTR
$289.95MP5 9mm Receiver Flat With Complete Weldment & Rivet Set - PTR/LSC Several years ago PTR bought out LSC and now owns the tooling and dyes for the LSC 9mm flats. These elusive flats have been hard to find and are now available for the first time here...HKP-19509$289.95 -
Choate HK MP5 QD End Cap with Buffer - Black
Choate
$99.95Quick Detach Steel End Cap With Replaceable Rubber Buffer - HK MP5 With this MP5 QD end cap upgrade you will get a heavier buffer to internally protect your firearm and keep your bolt carrier in tip top condition for years to come. Machined aircraft...HKP-20118$99.95 -
Out Of Stock
H&K MP5K/SP89/SP5K 9mm End Cap
H&K Heckler & Koch
$0.00HK Factory German MP5K, SP-89, & SP5K End Cap With Sling Swivel Each pistol end cap is OEM HK German MP5K and MP5K-N and has the HK German factory buffer. Compatible with: MP5K SP89 SP5K MP5K-N MP5K-PDW MP5K Clone Or Other Custom BuildsHKP-00394$0.00 -
H&K HK MR556/MR762 Receiver Take Down Tool
H&K Heckler & Koch
$19.95HK MR556, MR762 Take Down Tool For The Upper & Lower ReceiverThis is also the tool that is used to tighten down the stock movement on the E1/E2 stock. Each tool will store in the rear of the E1/E2 stock.Please note: That we get these from HK and...HKP-02653$19.95 -
HKP MP5K/SP89/SP5K 9mm End Cap - HK Style
HKP HK Parts
$64.95HKP MP5K/SP89/SP5K 9mm End Cap - HK Style This end cap is an identical reproduction of the factory end cap and features the original HK style buffer. Compatible With: MP5K SP5K SP89 In spec. clones and custom buildsHKP-16135$64.95 -
H&K HK MR556/416 Receiver End Plate
H&K Heckler & Koch
$14.95HK 416, MR556 End Plate For Receiver & Buffer TubeFits all HK MR556 & HK 416 upper receiever/buffer tubes. New HK German manufacture.HKP-16603$14.95 -
Choate MP5K/SP89 9mm Steel End Cap W/ Buffer
Choate
$45.95MP5K & SP-89 Steel End Cap With Replaceable Rubber Buffer Fits perfectly on all HK MP5K-type builds or projects. All metal construction, so you know it will last. Each unit comes with a sling loop for use with multiple sling types. Compatible...HKP-00395$45.95 -
H&K G36/SL8 (5.56/.223) Sight Rail With Front & Rear Sights
H&K Heckler & Koch
$289.95H&K German G36, SL8 Picatinny Sight Rail With Front And Rear Iron Sights Each rail works well with optics such as Eotech or Aimpoints. This is also a great part if you want a lower cheek weld and low-profile sight system. Made from durable...HKP-00274$289.95 -
H&K HK SL8, HK G36 Extended Bottom Rail Kit - Black
H&K Heckler & Koch
$99.95SL8 & G36 Extended Bottom Rail. This rail is the factory correct HK German manufactured bottom rail for the G36 or SL8 rifle. This allows the longest rail on the bottom of the polymer forearm. 9.25" in length overall. Comes with all mounting hardware...HKP-16549$99.95 -
H&K HK MR556/MR762 Front Lower Receiver Locking Pin
H&K Heckler & Koch
$59.95HK MR556 Locking Pin With Spring Loaded Detent Front pin assembly for the MR556, or other AR Variants. 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...HKP-02663$59.95 -
Tac Latch - PTR Spec
$69.95Tac Latch (latest Generation) PTR Spec - PTR .308 Firearms The new updated style of Tac latch is made specifically for the PTR 91 .308 receiver and will require very little modification to the firearm for installation. A major overhaul of the existing...HKP-17611$69.95 -
Out Of Stock
HK G36 Backplate w/ Recoil Buffer
USA
$44.95HK G36 Backplate With Recoil Buffer New G36 Backplate with new G36/SL8 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 &...HKP-18538$44.95 -
HK 416 10.4" Upper Gas Block - German
$279.95HK German 10.4" Upper Gas Block Complete New HK German manufacture. This is the ONLY 10.4" gas block available from HK Germany. Compatible with: HK 10.4" uppers HK MR556 to 10.4" conversions Please note: This unit is NOT a vented gas block.HKP-01543$279.95 -
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 -
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 G3/HK 91/PTR Parts Kit - PTR Barrel, Flat - Handpicked
H&K Heckler & Koch
$1,199.95G3, 91 Hand Picked Parts Kit - Barrel, Flat Handpicked stock set Handpicked housing, grip Handpicked magazine Handpicked end date coded bolt group New cocking tube included Full-Auto Bolt Group Please note: Each part in the G3 parts kit will vary in...HKP-20071$1,199.95 -
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 -
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