Airsoft Canada - View Single Post - Custom Gun - Bofors Defence Weapon

Marriott · June 17th, 2008, 06:07

Right, I’ve been browsing on here for the last few weeks and I am working on a custom long term gun project.

Brief background - I started Airsoft in August 2007, I have a M15A4 SPC and have now upgraded that fine, I also bought a Galaxy MP5k a few months back, added a CA Metal receiver and also custom fitted a 9.6v battery inside (that was a lot of work). That’s the current guns I have and I had need for a new project to work on. So I started looking around the web for ideas and came across this gun. Now I like it, I’m not one for Mill-Sims Airsoft so I figure this is a good project to take on.

Ideally I could do with setting this up as a Blog because it’s going to take ages and a lot of funds so people can follow it easily. Anyway so far I have the Base gun, the gearbox and some internal upgrades and having a couple of small issues so far. If anyone fancy lending a hand on problems that arise feel free to.

Here is the gun that’s being made

The Bofors Defence Weapon. It's going to be support class weapon due to the sheer weight I’m forecasting it will end up being... Estimated 8-10kg.

There will be a hell of a lot of electronics, settings, options and modding to do to get this up and running.

Here is a specification so far.

Specification

• Variable Firepower Levels – Standard, Turbo, Assault, Barrage
• Electronic Solenoid Activated M203
• Incremental Shot Counter –With Reset
• Magazine low Warning
• Laser Targeting
• Battery Power Level Monitoring
• M4 Magazine Compatible And Box Magazine Support.
• Semi, Burst Fire, Full Auto
• Master Power On
• Rifle/M203 Selection Then Activated Via Standard Trigger Module
• Custom Battery Pack Feeding 8.4v, 9.6v, 10.8v, 12v
• Secondary Electronics Battery
• Heavy Duty Sling to support the Weight 8-10kg

Ok that’s the basic Spec so far. Here are the current parts I have, which is by no means anywhere near 1/4 of the total parts for the entire thing.

Parts list For Gun Shell + Internals.

• A.G.M HK417
• PGC Pro-Win 8mm Gearbox
• Systema Turbo Motor
• 12v Intellect Battery
• PGC Cylinder head
• 247mm Ported Cylinder (Not decided if using the A.G.M one or aftermarket
• PGC Nozzle - Or Prometheus (Problem here due to length)
• Prometheus Ball bearing Spring Guide
• PGC Tappet Plate
• Systema Hop Rubber
• PGC 8mm Ball Bearings
• Currently the standard Brass barrel the A.G.M came with. Most likly it will be a Prometheus 6.03mm
• Prometheus Hard Piston
• Prometheus POM Piston Head
• Prometheus High Speed Gears
• Prometheus Anti Reversal Latch
• Prometheus Shim Set
• M90-M100 Spring For 330fps
• A.G.M Trigger Switch for now - Possibly Guarder Anti Heat Trigger

Ok problems so far is with the air seal inside the hopup chamber. This is supposed to be a really tight seal however the air nozzle is limited with how far forward it can go due to the tappet plate’s front wall thickness. There seems to be a 0.3mm Air gap when the nozzle is pushed forward, i can see the slight tapered edge of the nozzle in the bb feed hole still. If i push it forward manually witha screwdriver tip that extra smal distance the airseal is far better i'd guess at 40% better compression, so i need to wrok out a way to extend this.

Ideas i have come up with so far are using a platic glue/weld to build micron layers up to extend it, silicon sealant (not sure on this because it may come off easily) or if there are any other nozzles for other guns tha maybe longer that i could modify shorter to the correct length.

Any ideas on this nozzle issue would be welcome. Many thanks!

June 17th, 2008, 06:07	#1
Marriott Trader rating Join Date: May 2008 Location: Wiltshire/Near London, UK	Custom Gun - Bofors Defence Weapon - With PGC Right, I’ve been browsing on here for the last few weeks and I am working on a custom long term gun project. Brief background - I started Airsoft in August 2007, I have a M15A4 SPC and have now upgraded that fine, I also bought a Galaxy MP5k a few months back, added a CA Metal receiver and also custom fitted a 9.6v battery inside (that was a lot of work). That’s the current guns I have and I had need for a new project to work on. So I started looking around the web for ideas and came across this gun. Now I like it, I’m not one for Mill-Sims Airsoft so I figure this is a good project to take on. Ideally I could do with setting this up as a Blog because it’s going to take ages and a lot of funds so people can follow it easily. Anyway so far I have the Base gun, the gearbox and some internal upgrades and having a couple of small issues so far. If anyone fancy lending a hand on problems that arise feel free to. Here is the gun that’s being made The Bofors Defence Weapon. It's going to be support class weapon due to the sheer weight I’m forecasting it will end up being... Estimated 8-10kg. There will be a hell of a lot of electronics, settings, options and modding to do to get this up and running. Here is a specification so far. Specification • Variable Firepower Levels – Standard, Turbo, Assault, Barrage • Electronic Solenoid Activated M203 • Incremental Shot Counter –With Reset • Magazine low Warning • Laser Targeting • Battery Power Level Monitoring • M4 Magazine Compatible And Box Magazine Support. • Semi, Burst Fire, Full Auto • Master Power On • Rifle/M203 Selection Then Activated Via Standard Trigger Module • Custom Battery Pack Feeding 8.4v, 9.6v, 10.8v, 12v • Secondary Electronics Battery • Heavy Duty Sling to support the Weight 8-10kg Ok that’s the basic Spec so far. Here are the current parts I have, which is by no means anywhere near 1/4 of the total parts for the entire thing. Parts list For Gun Shell + Internals. • A.G.M HK417 • PGC Pro-Win 8mm Gearbox • Systema Turbo Motor • 12v Intellect Battery • PGC Cylinder head • 247mm Ported Cylinder (Not decided if using the A.G.M one or aftermarket • PGC Nozzle - Or Prometheus (Problem here due to length) • Prometheus Ball bearing Spring Guide • PGC Tappet Plate • Systema Hop Rubber • PGC 8mm Ball Bearings • Currently the standard Brass barrel the A.G.M came with. Most likly it will be a Prometheus 6.03mm • Prometheus Hard Piston • Prometheus POM Piston Head • Prometheus High Speed Gears • Prometheus Anti Reversal Latch • Prometheus Shim Set • M90-M100 Spring For 330fps • A.G.M Trigger Switch for now - Possibly Guarder Anti Heat Trigger Ok problems so far is with the air seal inside the hopup chamber. This is supposed to be a really tight seal however the air nozzle is limited with how far forward it can go due to the tappet plate’s front wall thickness. There seems to be a 0.3mm Air gap when the nozzle is pushed forward, i can see the slight tapered edge of the nozzle in the bb feed hole still. If i push it forward manually witha screwdriver tip that extra smal distance the airseal is far better i'd guess at 40% better compression, so i need to wrok out a way to extend this. Ideas i have come up with so far are using a platic glue/weld to build micron layers up to extend it, silicon sealant (not sure on this because it may come off easily) or if there are any other nozzles for other guns tha maybe longer that i could modify shorter to the correct length. Any ideas on this nozzle issue would be welcome. Many thanks!