Self contained airsoft, pump action.

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Fri Mar 13, 2020 6:25 pm

Experimenting with a self contained pump action airsoft using an air cylinder and springs to provide the power. Using a 1 1/16" bore X 2 " stroke cylinder.
m_a17020dp.jpg
m_a17020dp.jpg (3.18 KiB) Viewed 734 times
Cylinder is on the top and facing forward which means it needs to be pushed forward to compress springs rather than backwards. Will be self loading if I can make it work, FPS is not critical as I want to use it indoors :D
Pump 1.jpg
Pump 1.jpg (19.22 KiB) Viewed 734 times
User avatar
Xamllew
Private 4
Private 4
Posts: 94
Joined: Sun Aug 21, 2016 11:00 pm
Location: Belgrade
Has thanked: 2 times
Been thanked: 3 times

Fri Mar 13, 2020 9:24 pm

Neat idea to have the cylinder compress forward instead of back, I've seen this in Nerf guns but never an airsoft. Seems like it would be good for a compact bullpup as you seem to have.
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Sat Mar 14, 2020 11:25 am

If this one works I plan on building another with double the size cylinder and barrel, probably forward facing cylinder as well for the compactness.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 25687
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 36 times
Been thanked: 14 times

Donating Members

Sun Mar 15, 2020 9:03 am

Xamllew wrote:
Fri Mar 13, 2020 9:24 pm
Neat idea to have the cylinder compress forward instead of back, I've seen this in Nerf guns but never an airsoft. Seems like it would be good for a compact bullpup as you seem to have.
The original version of the Silverback SRS A1 cocked the piston on the forward stroke but most users didn't like it, they came out with a conventional rear cocking piston conversion kit shortly after and eventually phased out forward cocking altogether.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Sun Mar 15, 2020 3:10 pm

the only benefit I can see from the forward cocking is it would give rearward recoil effect :D
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Sat Mar 21, 2020 7:14 pm

A bit of progress, bracket in the middle is for the grip, sprig guide needs a locking collar for the charge handle to push on, trigger not figured out yet or linkage to rear to load.
pump.jpg
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Tue Mar 24, 2020 5:57 pm

trigger mechanism working with light springs on.
trigger (2).jpg
trigger (3).jpg
trigger (1).jpg
User avatar
hectmarr
Corporal 3
Corporal 3
Posts: 763
Joined: Sat May 07, 2016 3:49 pm
Location: Yaren
Has thanked: 4 times
Been thanked: 9 times

Wed Mar 25, 2020 9:00 am

Its construction looks excellent. Is it made of aluminum? or is it brass?
It looks like a super weapon for the house. Very good work!
Ideas don't make holes, guns do!
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Wed Mar 25, 2020 4:39 pm

pretty much all stainless steel
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Thu Mar 26, 2020 6:41 pm

Got a real trigger made, pull is really light. Had to braze the springs together as the ends were binding on the guide as they moved, have 2 lengths to try.
trigger.jpg
User avatar
farcticox1
Corporal 5
Corporal 5
Posts: 936
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 3 times
Been thanked: 3 times

Sat Mar 28, 2020 9:27 am

Grip made from 3/4" plywood.
grip (1).jpg
Trigger latch needed a bit of a detent to keep it latched
grip (2).jpg
Post Reply