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ScooterVauto · June 25th, 2011, 21:29

Start with a good tight bore (if funds are good, Promethus KN PDI)
if funds are marginal (Madbul MA and systema are reasonable)

Get a ported Piston head, I like the modify ones either the aluminim or POM version.
Although I had the aluminim version on a madbul 1/2 tooth piston, Guarder torque up gears but with only a Modify 110 spring.

Shot about 500 rounds, but when i dry fired it (yes i am dumb) the piston hit the cylinder head with so much force,
the front of the piston shattered into 4 seperate pieces.

aluminum provides superior Kenetic energy during the cycling of the aeg but with that
a greater increase of Componemt failure.

plus a quality hopup rubber.
I recently turned a stock Tm m4a1 into a Little Hotrod averaging 368 on .2s
using a Modify 100+ spring.
We installed a Promethus 363mm tbb and a Modify hopup rubber,
I turned on the Hopup Just enough so no BBs rolled out the barrel.

When i chronoed with .28s it shot 310 every single shot 10 out of 10
NICe consistancy

add to that with almost no hopup, I actully had to rasie the front sight post enough
to pull the nose of the aeg down as to stop shooting 6 inches over center at 25 Feet.

Depending on how long it lasts the Modify hopup rubber seems to get a pretty solid grip on the top of the BB.

PS The TM has a 2 peice hopup assembly

June 25th, 2011, 21:29	#6
ScooterVauto Trader rating Join Date: Jun 2010 Location: Edmonton	Start with a good tight bore (if funds are good, Promethus KN PDI) if funds are marginal (Madbul MA and systema are reasonable) Get a ported Piston head, I like the modify ones either the aluminim or POM version. Although I had the aluminim version on a madbul 1/2 tooth piston, Guarder torque up gears but with only a Modify 110 spring. Shot about 500 rounds, but when i dry fired it (yes i am dumb) the piston hit the cylinder head with so much force, the front of the piston shattered into 4 seperate pieces. aluminum provides superior Kenetic energy during the cycling of the aeg but with that a greater increase of Componemt failure. plus a quality hopup rubber. I recently turned a stock Tm m4a1 into a Little Hotrod averaging 368 on .2s using a Modify 100+ spring. We installed a Promethus 363mm tbb and a Modify hopup rubber, I turned on the Hopup Just enough so no BBs rolled out the barrel. When i chronoed with .28s it shot 310 every single shot 10 out of 10 NICe consistancy add to that with almost no hopup, I actully had to rasie the front sight post enough to pull the nose of the aeg down as to stop shooting 6 inches over center at 25 Feet. Depending on how long it lasts the Modify hopup rubber seems to get a pretty solid grip on the top of the BB. PS The TM has a 2 peice hopup assembly __________________ A single Light is all one needs to find their way through the darkness, But a single BB is all you need to bring it on! ========== Im not worried about the Bullet that has my Name on it, Im worried about the bullet that says "to whom it may concern" Lt. Alexander Washington -(Red Tails 1944) Ret.