New factory fresh HK German +4 over-sized roller NOT surplus 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 the size you need to order: Plus size rollers increase bolt gap. Minus sized rollers decrease bolt gap. The finest roller on the market made with factory German HK prints and specs.
- HKG3, 91 & PTR
- HK93, 33, 53
- HK MP5, MP5K
- Cetme, C308
- Clones & other HK style roller lock firearms
1 Review Hide Reviews Show Reviews
-
Increased headspace from 0.20 mm to 0.35 mm
Increased headspace from 0.20 mm to 0.35 mm