Project: Total rebuild of M16 DMR --Updated 6/3-2012--
First thread in this forum and im from sweden so excuse my poor english.
Well it all started about 10 years ago, bought my first CA M16 and it was
all busted up 2nd hand when i bought it, gearbox was completely shot off
in the front and the first thing i had to do was to dive into the world of AEG's!
good thing because i learned a few things along the way and ive had a passion
for the DMR role since i started playing airsoft. bolt's in all it's honor but being
in the group taking out targets further back than my team can reach is intense!
Current setup is an ACM metal receiver with skullfrog-markings and a fullstock
wrapped in carbon fiber-wrapping foil, standard M16 outer barrel and a 12"
front freefloat ris, home-buildt suppressor and some lathed parts between
the freefloat and the suppressor, i know it's far from RS but i like the look.
part from that there's a pretty standard foregrip and a bipod, Tasco 3-9 40mm
Guarder 650mm 6.02 (mind you it's 6 years old.. i didn't know better)
MODIFY Torus 8mm reinforced gearbox
CA 18:1 gears from early stoneage
SHS M160 spring
Energy full metal-teeth piston
Systema bore-up kit (getting preeeetty damn old..)
Madbull hopup unit/rubber
some noname ball bearing spring-guide
11.1V 4200mah 35C constant 75C burst.
noname China engine that outperforms the old trusty MAGNUM -it has no markings
but it's one HECK of a motor!! - wish i knew what it was lol..
guess that's it..
modifications done to the internals:
everything is polished.
gears and bearings are worn in under water for 24 hours without cylinder nor spring
but WITH the tappetplate installed - helps keeping the gears stable
and contacting in the right direction (language..) Makes an incredible difference
in both noise and durability! - i do this after every re-shimming.
tappetplate is rounded off to minimize contact surface inside the gearbox
nozzle front is lathed to a more shalow angle to better penetrate the hopup
rubber. the tappetplate itself has had about 0.6mm removed from it's front
to alow better penetration as well
using a stronger spring for the tappetplate to ensure constant power towards
the hopup each shot helps ALOT in both FPS and overall consistency +15m/s
compared to standard nozzle-shape and standard tappetplate spring.
flat o-ring lathed down from an oversized Oring made from a harder compound
to rely less on pressure-expansion and more on constant sealing (still low friction tho)
- playing around with O-rings has been one hell of a trip!!
i dont know what more to say.. part from all that work resulted in...
well a heckofa rifle, when it worked... now it's .. a bit broken shall i say?
Gearbox smashed it's front to bits and im quite surprised because i've heard
other people run M170 setups in their modify-gearboxes without problems..
guess i've must have gotten that monday-ex that shouldn't have left the factory
in the first place..
as i said, have no pictures really on this computer so this is just a buildup and my
starting point to start fiddeling around making this the best DMR i've done so far.
loads of changes are to be done to the barrel and the hopupunit and so forth
i know now from reading the forum that THIS is the place to be when it comes to
these kind of builds!
Take care and to be continued, with pictures and results, videos and comments.