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Semi Grease Guns


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Sir,

What airsoft housings are you using for these projects (?)…...and how are they holding up with blank-firing (?).

 

Could you share a little more inside/parts information/photos as these look interesting.

 

Last......are you using .45ACP full-length-Blanks, or the 9.3mm blanks made from cut-down 5.56mm brass...…..or the other optional 46mm-Blanks (?).

 

Regards,

RichardS

US Army, RET

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These are made using the Matrix M3a1 airsoft from Evike.com.

The M3a1 was my first build. The M3 came next with some improvements.

Both use original Bolts and guide rods/springs. The bolts are drilled for a firing pin and milled for AR hammer clearance and M3a1 finger cocking slot.

The barrel collars are machined to match the Metric thread pitch of the airsoft housing.

The mag well is larger than original so sheet steel is added inside the fit the mags.

The M3a1 uses thealuminum airsoft ejector housing while the M3 was cut and narrowed to fit an original. (The cocking lever moves but doesnt function)

I machined a custom trigger pack for the M3a1 but went with a drop in AR trigger pack for the M3 build. Both use original triggers linked to the AR trigger via a transfer bar

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Im using Atlantic wall 45 smg blanks. The barrel is chambered for crimped blanks only and has a restricted bore similar to other blank only barrels. I plan to make more collars and 16 barrels for live fire eventually.

Im still working out aperture sizes for reliable cycling. I live in town and re-enactments are still a few months away. The housings are decent and should hold up to blank and live fire. The fire control group area may prove to be a weak point after serious ammo dumping over time. Well see. Ive looked at a Dunrite Armory bfong that uses these same airsoft guns and it was all but rattled apart with ovaled out trigger pins.

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  • 3 months later...
I milled out a finger notch in the M3 bolt like the M3a1. It works with the shorter ejection port since the AR trigger resets at a shorter distance. The cocking lever is not functional with trigger clearance and required bolt milling. It does work as a sort of bolt hold open!
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  • 1 year later...
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  • 7 months later...

I apologize for not following up. Been getting back into the building mood and rediscovered this board.

 

To answer a few questions,

 

The airsoft mag well is larger than the mags. I had to spot weld in some sheet metal to make the mag fit snug. The Airsoft mag catch/release works as is

 

Parts seem to be holding up just fine. Live fire with the 16 barrel is like a sewing machine. Blanks are still finnicky

 

Ive had a lot of requests to make them but, Im just a home builder and not a manufacturer

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mbatvburg,

What if the difference between the different manufacturer-models (as far as metals, etc..) .......of what is advertised on the web. (?) :

 

Matrix

AEG by S&T

Evike-Matrix

Denix

Dun-rite-Armory

 

Some are available....some not.......and appears that some are the same item that is "reworked" by others prior to resale ..... (?).

TIA for any helpful information (possibly additional photos).

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