Airsoft Canada - View Single Post - Tokyo Marui 5-7

lurkingknight · September 14th, 2014, 21:53

Okay, so I've had the pistol prepped for a while now, it replaced my kwa 226 as my go to pistol, this thing is just so great.

I use my pistol a lot. Basically while I cover one field of fire with my rifle, I have been known to draw my pistol and fire in an entirely different arc. The 5-7 with .3s in the way I've prepared it absolutely outshoots some AEGs in terms of accuracy. It scares people.

I've put maybe a total of 50 mags through the gun by this point, maybe more. 50 is a safe bet. I have 4 mags, I will fill them and shoot them at the end of the day at least 1 time, sometimes 2 over the course of a game day.

So even after the reliability preparations, I broke it down today after a game in a lot of wet dirt. dry cake mud everywhere, on mags and such. So as I was cleaning the frame and magwell I decided to strip the barrel group out of the slide and inspect for the dreaded issues.

Front end... still solid, no cracks, no nothing. Looks like it's holding up well.

The outer barrel really takes a beating from the recoil spring. I'm pretty sure the spring wants to pull the barrel right out of the hopup unit, that's why it breaks.

So the outer barrel was loose in the hop up. Not a good sign.

I tore it apart and immediately one of the pegs on half of the hop fell out.

You can see here after I removed all the gasket maker, that one peg has cracked/sheared right out. The other side is missing chunks at the front facing and rear facing ends. This is pretty much in line with the theories that the slide stroke under power will eventually rip the outer barrel out of the hop.

But interestingly... the INNER barrel locks are ALSO sheared off. The small rectangles lock the inner barrel in place.

At this point, I have 2 spare hop up units to try again.

I'm thinking I might epoxy/jbweld the inner barrel into the outer and epoxy that into the hopup unit. Not sure if I want to try it with the upgrade barrels or the factory ones.

The stock inner and outer barrels are made of much softer materials. But it's likely they'll shear instead of the hop up unit.

September 14th, 2014, 21:53	#10
lurkingknight "bb bukakke" KING! Trader rating Join Date: Jul 2011 Location: Ottawa	Okay, so I've had the pistol prepped for a while now, it replaced my kwa 226 as my go to pistol, this thing is just so great. I use my pistol a lot. Basically while I cover one field of fire with my rifle, I have been known to draw my pistol and fire in an entirely different arc. The 5-7 with .3s in the way I've prepared it absolutely outshoots some AEGs in terms of accuracy. It scares people. I've put maybe a total of 50 mags through the gun by this point, maybe more. 50 is a safe bet. I have 4 mags, I will fill them and shoot them at the end of the day at least 1 time, sometimes 2 over the course of a game day. So even after the reliability preparations, I broke it down today after a game in a lot of wet dirt. dry cake mud everywhere, on mags and such. So as I was cleaning the frame and magwell I decided to strip the barrel group out of the slide and inspect for the dreaded issues. Front end... still solid, no cracks, no nothing. Looks like it's holding up well. The outer barrel really takes a beating from the recoil spring. I'm pretty sure the spring wants to pull the barrel right out of the hopup unit, that's why it breaks. So the outer barrel was loose in the hop up. Not a good sign. I tore it apart and immediately one of the pegs on half of the hop fell out. You can see here after I removed all the gasket maker, that one peg has cracked/sheared right out. The other side is missing chunks at the front facing and rear facing ends. This is pretty much in line with the theories that the slide stroke under power will eventually rip the outer barrel out of the hop. But interestingly... the INNER barrel locks are ALSO sheared off. The small rectangles lock the inner barrel in place. At this point, I have 2 spare hop up units to try again. I'm thinking I might epoxy/jbweld the inner barrel into the outer and epoxy that into the hopup unit. Not sure if I want to try it with the upgrade barrels or the factory ones. The stock inner and outer barrels are made of much softer materials. But it's likely they'll shear instead of the hop up unit. __________________ I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.