TM G17/RMR Zero Housing Review
Today we will review one of the most important product of Guns Modify in 2016 .
Here is the all new Guns Modify Zero housing system for TM Glock .
Also we release the RMR version for all the RMR cut slide set base on TM G17 system .
e.g., PTS Atom kit , RWA Agency kit , Guns Modify SA kit and some RMR cut slide on the market .
Because they’re similar so we only review the G17 standard version .
Open the packing , we found these .
2, piston with install screw ( piston head not included ) .
3, changeable rear plate .
4, rear sight screw.
5, Steel hammer and stainless steel rotor .
6, Steel sear .
7, New design Sear and firing pin spring .
8, Steel level with SKD11 60HRC pin .
9, Steel level spring *2 ( 1 spare ) .
Let’s check the most important parts of this product .
Steel level with SKD11 60HRC pin. Please confirm the right way to install the level spring .
That’s it looks like when installed to the housing .
By the way here is the install manual of the Guns Modify G series separately sear/firing pin spring system .
And we released the bearing hammer rotor for our Zero housing set , it also fit Marui stock hammer .
OK,let’s see how it works
When the slide going forward , the steel level swing and the slide back in place with very tiny resistan
( cause by little spring installed on the level ).
Almost the same function with our old zero hammer .
Somebody will said , if the zero hammer will solve this problem why we keep working on it .
Yes , zero hammer solve the slide recoil problem , but it cause some new .
First is the aluminum rotor wear out so fast . It become to a unstable parts .
Second when we change to a steel rotor , it break the nozzle housing . That will be a more expensive problem .
Aluminum rotor wear out very quick and the hammer can not lock .
Steel rotor breaks the nozzle housing .
People may ask , why we insist to make the slide back with no resistan ?
Zero hammer ver 1,2,3, xxx and this ? Please check our test .
Here is the equipment , a digital push pull meter and some mount . Marui 100% hammer spring . Guarder 150%, APS 200% .
In this review we only use the stainless steel rotor comes with the set .
In order to reduce the interference , we take out the recoil spring and outer barrel / inner barrel set .
How our equipment works
Test 1 , Marui stock hammer spring (100% ) .
Marui stock housing and hammer 7.21 N
Guns Modify Zero housing system 0.42N .
Test 2 , Guarder hammer spring ( 150% )
Marui stock housing and hammer 11.55 N .
Guns Modify Zero housing system 0.40N .
Test 3 APS 200% hammer spring ( Best for summer out door with green or CO2 , very heavy and never light strike ) .
Marui stock housing and hammer 18.61 N .
Guns Modify Zero housing system 0.44N . Still like nothing .
Test1 , 100% spring
Test2 , 150% spring
Test3 , 200% spring
Because of the glock hammer housing room and the airsoft structure , TM glock have to use a over 150% hammer spring to make sure the hammer will not light strike when use green gas around 25℃ . But it’s still not sure in summer , especially out door . The problem is you have to use a over 150% recoil spring to make sure the slide will back in place . It will use more gas to push the slide and will reduce the blowback feel . That’s what we don’t want .
Bad cycle : light strike – strong hammer spring – strong recoil spring – use more gas / reduce blow back – use high pressure gas or gun become unstable – have to use high pressure gas or heat the mag - cause light strike .
The Zero system break the bad cycle , we don’t need strong recoil spring even you use the 200% spring .
And we think about the maulfunction problem , our system give you a chance to fix the sear lock problem without any tools .
When the gun use for a long time , the sear and hammer may have lock problem or some other reason cause the hammer can not lock when it blowback . Just like photo .
To solve this problem without tools .
Step 1 : push down the slide lock and push the slide forward until it stop by hammer (as this photo ).
Step 2 : Release the slide lock and cock the gun again .
Hope you enjoy with our review .