Description
Army Custom 5.1/4.3/JW3/Baba Yaga Hi-Capa Series Part – Outer Barrel End Plug (R501-A-12)
This is an Army Armament (Army Custom) replacement outer barrel end plug for its 5.1/4.3, JW3 and Baba Yaga Hi-Capa series pistols, part number R501-A-12. Army Armament is known for affordable, well-built gas blowback Hi-Capa pistols, and it supplies original spare parts so owners can keep them running and looking right.
The end plug is a small part at the muzzle end of the outer barrel. Small parts like this are easily lost during a strip-down or damaged by a knock, and an original replacement is the quickest way to restore the correct fit and appearance without buying a complete barrel assembly.
Why replace it
If the plug has been lost, cracked or damaged, the front of the pistol may not look or fit together as it should. Because this part is listed for the 5.1, 4.3, JW3 and Baba Yaga Hi-Capa models, it is a useful spare for anyone who owns more than one Army Hi-Capa or who regularly strips their pistol for cleaning.
Please compare the product images with the part on your pistol before ordering, so you can be sure it is the piece you need.
Fitting
Empty the magazine of gas and BBs and field-strip the pistol by removing the slide. Note how the old part sits and how it is retained before removing it, then fit the new plug in the same position and reassemble carefully. Check that the slide moves freely before refitting a gassed magazine. If you are not comfortable stripping a gas pistol, a local airsoft technician can fit it quickly.
Key features
- Original Army Armament part
- Part number R501-A-12
- For 5.1/4.3, JW3 and Baba Yaga Hi-Capa series
- Replaces a lost or damaged end plug
- Handy spare to keep in your kit
Compatibility
Listed for Army Armament (Army Custom) Hi-Capa series pistols as named. Hi-Capa pistols from different makers can look very alike, but parts are not always interchangeable between brands or even between models, so please check your pistol’s model and compare the product images with your original part before ordering. If you are unsure, contact us with your pistol details and we will help.
Care and maintenance
Keep your pistol clean and free of grit, especially after outdoor games, and wipe the outside with a lightly oiled cloth. Put a drop of silicone oil on the magazine seals and valves from time to time, and store magazines with a small amount of gas in them to keep the seals in good condition.
When you strip the pistol for cleaning, work over a tray or towel so small parts like this one are not lost.
Who is it for?
For owners of Army Armament 5.1/4.3, JW3 and Baba Yaga Hi-Capa pistols who need to replace a lost or damaged end plug, and for technicians maintaining these pistols.
Please note: This is a single spare part; the pistol is not included. Always empty the magazine of gas and BBs before working on a gas pistol.









