Bolt Carrier Groups
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H&K Roller Retainer Spring - Action 3
H&K Heckler & Koch
$6.74H&K Roller Retainer Spring - Action 3 This part is the second-generation roller holder. Each retainer fits all "action 3" 9mm MP5 & MP5K bolt heads & MP5 40/10 bolt heads. The roller retainer spring is a common repair and replacement item and...HKP-00068$6.74 -
H&K German Roller Retainer Plate For Rollers
H&K Heckler & Koch
$2.74Used HK German Roller Retainer Plate For All Rollers. This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Made in Germany. Fits all original 1st gen...HKP-02690$2.74 -
H&K MP5 Bolt Group Backup Kit - Action 3
H&K Heckler & Koch
$22.95New HK German MP5, MP5K, HK94, SP89 9mm Action 3 Bolt Group Backup Kit.This Kit Includes The Highest Wear And Replace Items On The MP5 Action 3 Bolt Group, As Well As The Easy To Lose Pin.Each Repair Kit Includes: Factory German MP5 9mm Extractor Spring...HKP-16993$22.95 -
H&K Locking Roller Pin For Bolt Heads
H&K Heckler & Koch
$6.95H&K Locking Roller Pin For Bolt Heads HK roller retainer pin or clamping sleeve (holds roller retainer plate in place). Each retainer pin works with all roller retainer plates & springs. All 3 types including oval-shaped roller retainer...HKP-00066$6.95 -
H&K Roller For Bolt Head 8.00mm - Standard
H&K Heckler & Koch
$12.95H&K Roller For Bolt Head 8.00mm - Standard The 8mm roller is the proper roller size for the standard "zero" function. The correct 8mm roller is essential for proper head spacing and bolt gap. New HK German, not surplus or used goods, that are worn...HKP-00506$12.95 -
H&K Roller Retainer Pin - New Style
H&K Heckler & Koch
$6.95HK Roller Retainer Pin, Clamping Sleeve- New StyleNewest style latest design HK roller retainer pin or clamping sleeve (holds roller retainer plate in Place. Works with all roller retainer plates & springs. All 3 types Std. roller retainer, roller...HKP-01954$6.95 -
HKP Roller +8 - New - 8.08mm
HKP HK Parts
$8.99Roller +8 - New - 8.08mmHK Parts Standard (8.08 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19437$8.99 -
H&K +2 Roller For Bolt Head 8.02mm - Over-sized
H&K Heckler & Koch
$24.95H&K +2 Roller For Bolt Head 8.02mm - Over-sized New HK standard (8.02 mm) locking roller. The proper roller size is essential for a proper bolt gap. New HK German, not surplus or used out-of-spec part. Please note: The price listed is per roller...HKP-00507$24.95 -
HKP 1st Gen Roller Retainer Plate To Spring Upgrade
HKP HK Parts
$9.95Must have upgrade for all HK owners. Our Action 3 roller retainer spring upgrade spring for all 1st Generation bolt heads (replaces the oval shaped roller retainer plate). The roller retainer plate is one of the most common replacement or breakage parts...HKP-02119$9.95 -
H&K MP5 & MP5K F Style Roller Retainer Plate - 3rd Gen
H&K Heckler & Koch
$14.95HK German "F" Style 3rd Gen Roller Retainer Plate This is the latest and greatest German design of roller retainer plates found in all of the latest production of HK German bolt heads. The MP5 F roller retainer plate fits true F-style bolt heads only...HKP-00069$14.95 -
HKP Roller +6 - New - 8.06mm
HKP HK Parts
$8.99Roller +6 - New - 8.06mmHK Parts Standard (8.06 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19439$8.99 -
H&K +4 Roller For Bolt Head 8.04mm - Over-sized
H&K Heckler & Koch
$14.95H&K +4 Roller For Bolt Head 8.04mm - Over-sized New HK German not surplus or used goods. The correct roller is essential for proper head spacing and the bolt gap. Compatible with: HKG3, 91 & PTR HK93, 33, 53 HK MP5, MP5K Cetme, C308 Clones...HKP-00508$14.95 -
HKP Roller +2 - New - 8.02mm
HKP HK Parts
$8.99Roller +2 - New - 8.02mm HK Parts Standard (8.02 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19423$8.99 -
HKP Roller +4 - New - 8.04mm
HKP HK Parts
$8.99Roller +4 - New - 8.04mmHK Parts Standard (8.04 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19441$8.99 -
RCM MP5 9mm Full Auto Bolt Carrier
RCM
$179.95MP5 9mm Full Auto Bolt Carrier - RCM New US RCM manufactured MP5, 94 F/A carrier with all current "F" style upgrades and tungsten filled for the best performance and the utmost reliability. They were machined completely from billet ordnance grade steel...HKP-01188$179.95 -
H&K Roller Retainer Plate For Rollers
H&K Heckler & Koch
$25.95New HK German Roller Retainer Plate For Rollers This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible with: MP5, 94 MP5K, SP89 HKG3, 91,...HKP-00065$25.95 -
RCM HK MP5 Complete HK Style 9mm Bolt Group
RCM
$409.95Complete Bolt Group - RCM - HK Style MP5 9mmIdeal to replace out of spec, worn or broken bolt groups or for that custom build. Each bolt group will work and fit on semi or full auto MP5 9mm style firearms.This is the finest US BCG available. Each bolt...HKP-19317$409.95 -
HKP HK 91/93/33/53/G3 (5.56 / .223) & (7.62x51 / .308) Bolt Carrier Assembly & Disassembly Tool
HKP HK Parts
$19.87HK Bolt Carrier Assembly & Disassembly Tool This tool is one of the best items you can buy if you are new to HK and plan on taking apart your bolt group for cleaning or maintenance. A must-have for all HK collectors and shooters. This is the original...HKP-00785$19.87 -
HKP Roller +9 - New - 8.09mm
HKP HK Parts
$8.99Roller +9 - New - 8.09mmHK Parts Standard (8.09 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19438$8.99 -
H&K HK G3/91/PTR F/A Complete Training Bolt Group
H&K Heckler & Koch
$499.95Surplus HK German Plastic training ammo bolt group. To be used with the readily available and cheap plastic tipped training ammo only! A neat collectible item as only a small number were made during the 1970's. The bolt carrier can also be cut...HKP-18265$499.95 -
RCM MP5K/SP89 9mm Full Auto Bolt Carrier
RCM
$179.95MP5K Full Auto Bolt Carrier - US- Made - RCM This part is machined from billet ordnance steel. Our US-made MP5K carrier is made to the most updated and latest MP5K F specs. Tungsten filled, heat treated, and factory fresh production. Providing the finest...HKP-01190$179.95 -
RCM HK Style MP5K 9mm Complete Bolt Group
RCM
$379.95Complete Bolt Group - RCM - HK Style MP5K 9mm Ideal to replace out of spec, worn or broken bolt groups or for that custom build. Each bolt group will work and fit on semi or full auto MP5K 9mm style firearms.This is the finest US BCG available...HKP-19846$379.95 -
HKP Roller +3 - New - 8.03mm
H&K Heckler & Koch
$8.99Roller +3 - New - 8.03mmHK Parts Standard (8.03 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19425$8.99 -
H&K HK MP5 German 9mm Trigger Pack Complete F/A Roller Sear, XX Struted/Pinned Hammer
H&K Heckler & Koch
$369.95HK German SEF Full Auto Trigger Pack Complete - 9mm Factory HK German MP5 9mm caliber full auto trigger pack unmodified as it comes from HK Germany. This trigger pack offering started as a demilled 80's production German MP5 where the trigger pack was...HKP-19342$369.95 -
HKP Roller +7 - New - 8.07mm
HKP HK Parts
$8.99Roller +7 - New - 8.07mmHK Parts Standard (8.07 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19442$8.99 -
RCM HK MP5 SD 9mm Complete Bolt Group
RCM
$394.95Complete Bolt Group - RCM - HK MP5 SD 9mmIdeal to replace out of spec, worn or broken bolt groups or for that custom build. Each bolt group will work and fit on semi or full auto MP5 SD 9mm style firearms.This is the finest US BCG available. Each bolt...HKP-19665$394.95 -
H&K Roller Sear For SEF, Navy Trigger Packs
H&K Heckler & Koch
$29.95HK Roller Sear Catch New HK German Roller Sear for SEF & Navy trigger packs. This is the newer style &roller& type not the older friction type of sear. This item is also referred to as the catch with roller but more commonly called a sear.HKP-01710$29.95 -
HKP Roller +1 - New - 8.01mm
H&K Heckler & Koch
$8.99Roller +1 - New - 8.01mmHK Parts Standard (8.01 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19424$8.99 -
HKP SP5K Spec - Full Auto Bolt Carrier
RCM
$189.95HK SP5K Specification Full Auto Bolt Carrier - US MadeMachined completely from billet ordnance grade steel. The HK SP5K carrier is made to the most updated and latest MP5K F specs that will fit the SP5K. Tungsten filled, heat treated, & factory...HKP-17932$189.95 -
H&K 91/G3 (7.62x51 / .308) Full Auto Bolt Carrier - Surplus
H&K Heckler & Koch
$149.95HK G3 Factory Full Auto Bolt Carrier - GermanGerman HK 70'- 80's production used surplus bolt carrier with locking lever, spring & axle pin installed. Most are NOT date coded on the top of the carrier. Most will be marked on the side or more common...HKP-01952$149.95 -
H&K Roller Type Trip Lever
H&K Heckler & Koch
$29.95Roller Type Trip Lever for new SEF & Navy Trigger Packs.Genuine German Heckler & KochThis is the newer style trip lever for use with a roller sear catch not the older friction type. May or may not be marked with the X or XX markings as some...HKP-02466$29.95 -
Out Of Stock
GSG9 HK G36 (5.56/.223) Incomplete Bolt Head
GSG9
$0.00G36 Incomplete Bolt Head - USA G36 bolt head allows the use of double stack magazines in your SL8 conversion to high-capacity G36, Magpul, or AR15 magazines.HKP-00802$0.00 -
HKP Roller +5 - New - 8.05mm
HKP HK Parts
$8.99Roller +5 - New - 8.05mmHK Parts Standard (8.05 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19440$8.99 -
H&K German Roller +2 - Used - 8.02mm
H&K Heckler & Koch
$7.95Used HK standard (8.02 mm) locking roller, The proper roller size is essential for proper bolt gap. HK German Manufacture.Price is per roller.**You need to order two for a complete set (pair) for bolt head.**HKP-19366$7.95 -
H&K Standard Roller 8.00mm - Used
H&K Heckler & Koch
$7.958.00mm Standard Size (zero or unmarked) For HK Roller Lock Bolt HeadHK spec new unmarked 8.00mm roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. An easy way to remember...HKP-19374$7.95 -
H&K G36/SL8 (5.56/.223) Bolt Head Ejector Pin
H&K Heckler & Koch
$7.95HK Ejector roll pin for G36, SL8 bolt heads. This item is the pin that holds the ejector & ejector spring in place. A common wear & replacement item and a must have when doing bolt head maintenance Fits all HK G36 & HK SL8 modelsHKP-01876$7.95 -
HK G36/SL8 (5.56/.223) Extractor Axle
$6.95HK G36, SL8 Extractor Axle- US MadeNew extractor axle for use on all G36, Sl8 bolt heads. This part can become heavily worn and is prone to breakage.Fits all: HK G36 models HK Sl8 modelsHKP-18370$6.95 -
Out Of Stock
H&K -6 Roller For Bolt Head 7.94mm - Under-sized
H&K Heckler & Koch
$0.00H&K -6 Roller For Bolt Head 7.94mm - Under-sized New HK German -6 roller that measures 7.94mm. For use with all HK 90 series firearms. Each roller is sold individually. Order two if you need a pair.HKP-00342$0.00 -
H&K 91/G3 (7.62x51 / .308) Complete F/A Bolt Group - Used
H&K Heckler & Koch
$349.95HK Factory German G3, 91, PTR F/A Bolt Group - Complete Used Everything you need as a spare or a direct replacement of your existing bolt group. This bolt group is a direct replacement of all HK G3, HK91, SAR3/8, PTR-91, C91, Clones, Etc. Bolt...HKP-00356$349.95 -
H&K 91/G3 (7.62x51 / .308) F/A Bolt Carrier - Tungsten Filled - Surplus
H&K Heckler & Koch
$249.95HK Factory F/A Tungsten Filled Bolt Carrier Used German SurplusHK German G3 F/A bolt carrier with the tungsten inserts. The tungsten upgrade is ideal for those that are having bolt bounce issues or want the smoothest carrier for FA use. The carrier are...HKP-01998$249.95