HK91 / G3 / HK51 Bolt Carrier Groups
Ensure flawless operation in your HK G3/91 series rifle. Select from original HK bolt carrier groups, US-made variants, and performance-enhanced options for smoother cycling.
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On Sale
HK91, G3 Firing Pin
H&K Heckler & Koch
Now: $17.95Was: $19.95HK G3, HK91, PTR 762/.308 Firing Pin HK German, new factory part made from steel. Great for spares as this is a common wear item. Compatible With: HK G3 HK91 HK PTR CETME & C308Now: $17.95Was: $19.95 -
On Sale
HK Roller Type Trip Lever
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K Roller Type Trip Lever This is a genuine German Heckler & Koch part. This is the newer style trip lever for use with a roller sear catch, not the older friction type. Please Note: May or may not be marked with the X or XX...Now: $26.95Was: $29.95 -
On Sale
HKP Roller +1 - New - 8.01mm
H&K Heckler & Koch
Now: $8.09Was: $8.99Roller +1 - New - 8.01mm HK Parts Standard (8.01 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...Now: $8.09Was: $8.99 -
On Sale
HK90, MP5 Series Roller Locking Plate - Original Style
H&K Heckler & Koch
Now: $39.56Was: $43.95New HK German Roller Retainer Plate For Rollers Original-style roller locking plate. 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. Compatible With: HK MP5*** HK...Now: $39.56Was: $43.95 -
HK -4 Roller For Bolt Head 7.96mm - Under-sized
H&K Heckler & Koch
$27.99H&K -4 Roller For Bolt Head 7.96mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -4 roller, each roller is priced per roller. Please Note: The price listed...$27.99 -
On Sale
HK Standard Roller 8.00mm - Used
H&K Heckler & Koch
Now: $7.16Was: $7.958.00mm Standard Size (zero or unmarked) For HK Roller Lock Bolt Head HK spec 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. The best roller on the market...Now: $7.16Was: $7.95 -
On Sale
HK Roller Sear For SEF, Navy Trigger Packs
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K Roller Sear For SEF & Navy Trigger Packs It is the newer style, not the older friction type of sear. This item is also referred to as the catch with a roller but is more commonly called a sear.Now: $26.95Was: $29.95 -
On Sale
HK33, HK53, HK93, HK91, G3 Bolt Locking Lever Spring For Bolt Head
H&K Heckler & Koch
Now: $4.46Was: $4.95HK Bolt Carrier Bolt Locking Lever Spring New HK German factory bolt carrier locking lever spring for locking lever latch. Compatible With: HK G3, HK91 PTR models HK93, 33, 53 Other clones and custom buildsNow: $4.46Was: $4.95 -
On Sale
HK91, G3 Firing Pin - Used
H&K Heckler & Koch
Now: $6.25Was: $6.95H&K 91/G3 (7.62x51/.308) Firing Pin - Used Great for spares as this is a common wear item. Compatible With: HK G3 & HK 91, PTR or clone riflesNow: $6.25Was: $6.95 -
On Sale
HK G3K Locking Piece #18 - 50 Degree
RCM
Now: $44.96Was: $49.95RCM HK G3K Locking Piece #18 - 50 Degree The #18 LP is the factory-correct locking piece for G3K style builds or other custom builds. The locking piece is the timing mechanism that a delayed roller lock firearm uses to tell the firearm when to unlock and...Now: $44.96Was: $49.95 -
On Sale
HK91, G3 Locking Piece - 45 Degree
H&K Heckler & Koch
Now: $26.95Was: $29.95New Old Stock German HK Locking Piece For G3, 91, & PTR This is the factory-correct 45-degree locking piece for HK 91/G3 & PTR .308 full-length firearms. All steel construction is new in sealed wrapping.Now: $26.95Was: $29.95 -
On Sale
HK33, HK91, G3 Recoil Rod Stop Pin
H&K Heckler & Koch
Now: $8.96Was: $9.95G3, 91, PTR, 93, & 33 Recoil Rod End Cap New HK German recoil rod end cap or stop pin for HK factory recoil rods. This item retains the recoil spring on the recoil rod assembly. A great spare and wear and replacement part. Compatible With: HK G3, 91...Now: $8.96Was: $9.95