Parts kit for the GU-37. A portion of sales will be donated back to the developer, GoonGunDesigns.
Everything you need to complete the GU37 **Fencepost included!**
Per the GU37 Guide:
Any AR lower receiver will work with the GU-37, however the buffer tube
attachment point must be selected to accommodate the selected bolt system
All our Kits are backed by our 100% Quality Guarantee.
We ship our products via USPS to save you money.
|m5x5mm cup point set screw||8|
|m3x6mm cup point screw||1|
|m5x18mm flat head screw||2|
|m5 nylock washer||2|
|m4x25mm Socket Head Screw||2|
|m4x30mm Socket Head Screw||1|
|m5x30mm socket head screw||3|
|9mm OD, 3.2 ID Washer||1|
|m3x30mm stainless steel rod||2|
|ar15 magazine catch spring||2|
|m5x12mm socket head screw||1|
|m5x30mm button head cap screw||1|
|m5 nut thin||1|
|m4x16mm socket head screw||2|
|m3x18.5mm stainless steel rod||1|
|m3x75mm threaded rod||1|
|0.18" OD, 0.13" IDx279.4mm spring||2|