navgunner
UZI Talk Life Member

I've added a few new parts for the Smith & Wesson 76 and the MK760 to my website https://navgunner.com/navgunner-llc/ols/products
S&W 76 – MK760 SMG Recoil Spring
$35
These recoil springs are manufactured to original factory specifications. This is a critical wear item; if your spring is worn then it will eventually cause an egging of the rear-cap retaining pin hole on the receiver (because the bolt is allowed to collide with the endcap). Rubber buffers (also available on my website help too)
This spring guide rod is compatible with all original S&W 76s AND the MK760 variant SMGs too.
S&W 76 – MK760 SMG Recoil Spring Guide Rod
$80
These guide rods are an upgraded one-piece design (originals were a crimped two-piece). Originals were prone to getting crushed (probably due to weak recoil springs). This is a necessary spare part.
Please note that in a few cases, there may be some minor fitting of the small nib feature (on these guide rods) that retains the end-cap pin. This is easily done with a hand file.
This spring guide rod is compatible with all original S&W 76s AND the MK760 variant SMGs too.
S&W 76 – MK760 SMG Impact Washer/Buffer for the Guide Rod
$8
This washer/buffer gets installed onto the inside of the guide rod just before the recoil spring. These last 500 – 1000 rounds and help soften wear on internal components. These do NOT change the cyclic rate.
This buffer is compatible with all original S&W 76s AND the MK760 variant SMGs too.
S&W 76 – MK760 SMG Recoil Spring
$35
These recoil springs are manufactured to original factory specifications. This is a critical wear item; if your spring is worn then it will eventually cause an egging of the rear-cap retaining pin hole on the receiver (because the bolt is allowed to collide with the endcap). Rubber buffers (also available on my website help too)
This spring guide rod is compatible with all original S&W 76s AND the MK760 variant SMGs too.
S&W 76 – MK760 SMG Recoil Spring Guide Rod
$80
These guide rods are an upgraded one-piece design (originals were a crimped two-piece). Originals were prone to getting crushed (probably due to weak recoil springs). This is a necessary spare part.
Please note that in a few cases, there may be some minor fitting of the small nib feature (on these guide rods) that retains the end-cap pin. This is easily done with a hand file.
This spring guide rod is compatible with all original S&W 76s AND the MK760 variant SMGs too.
S&W 76 – MK760 SMG Impact Washer/Buffer for the Guide Rod
$8
This washer/buffer gets installed onto the inside of the guide rod just before the recoil spring. These last 500 – 1000 rounds and help soften wear on internal components. These do NOT change the cyclic rate.
This buffer is compatible with all original S&W 76s AND the MK760 variant SMGs too.


