HK 3-Lug Adapters

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The versatile H&K 3-lug system is ever popular and for good reason. We make adapters so you can use your HK Mount on your host weapon. Reasonable pricing and fast, low cost shipping. Our adapters are made from American steel by American workers on precision CNC machines in the United States to guarantee concentric to your host firearms barrel threads. From raw material to finishing, all work is done in house and we stand by our products.



Quantity Model- Manufacturer Product Image Item Name Price
50 AD-3L-520 XCALIBER FIREARMS 3 Lug Adapter 1/2-20to HK 3 Lug, 1/2x203lug

3 Lug Adapter 1/2-20to HK 3 Lug, 1/2x203lug

1/2-20 to 3 Lug Adapter. Convert your 1/2-20 threaded barrel to the Heckler & Koch 3Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished.compatible with silencer co, Gemtech, AAC and other mounts, CZ452 1/2x20 3 lug adapter
$59.99

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80 AD-3L-528 XCALIBER FIREARMS 3 Lug Adapter 1/2X28 to HK 3 Lug, 1/2-28 3lug

3 Lug Adapter 1/2X28 to HK 3 Lug, 1/2-28 3lug

1/2X28 to 3 Lug Adapter. Convert your 1/2-28 threaded barrel to the Heckler & Koch 3 Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished.compatible with silencer co, Gemtech, AAC and other mounts, best 3lug adapter available.
$59.99

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121 AD-3L-536 XCALIBER FIREARMS 3 Lug Adapter 1/2X36 to HK 3 Lug, 1/2-36 3lug

3 Lug Adapter 1/2X36 to HK 3 Lug, 1/2-36 3lug

1/2X36 to 3 Lug Adapter. Convert your 1/2-36 threaded barrel to the Heckler & Koch 3 Lug system. Manufactured to rigid tolerances out of high quality American steel. Black oxide finished.compatible with silencer co, Gemtech, AAC and other mounts, best 3lug adapter on the market
$59.99

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16 AD-3L-625 XCALIBER FIREARMS 3 Lug Adapter 5/8X24 to HK 3 Lug, 5/8-24 3lug

3 Lug Adapter 5/8X24 to HK 3 Lug, 5/8-24 3lug

5/8X24 to 3 Lug Adapter. Convert your 5/8-24 threaded barrel to the Heckler & Koch 3 Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished. Designed to be used for 9mm subsonic suppressors shooting 300 Blackout. compatible with silencer co, Gemtech, AAC and other mounts, best 3lug adapter available. This item, as is, will not pass 45acp. If you...
$59.99

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18 AD-3L-562 XCALIBER FIREARMS 3 Lug Adapter 9/16-24 to HK 3 Lug, 9/16-24

3 Lug Adapter 9/16-24 to HK 3 Lug, 9/16-24

9/16-24 to 3 Lug Adapter. Convert your 9/16-24 threaded barrel to the Heckler & Koch 3 Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished. This adapter WILL PASS 45ACP and lower. Compatible with silencer co, Gemtech, AAC and other mounts, best 3lug adapter available.
$59.99

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124 AD-3L-13.5X1L XCALIBER FIREARMS 3 Lug Adapter M13.5X1L to HK 3 Lug, M13.5x1L 3lug

3 Lug Adapter M13.5X1L to HK 3 Lug, M13.5x1L 3lug

M13.5x1L to 3 Lug Adapter. Convert your M13.5x1L threaded barrel to the Heckler & Koch 3 Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished.compatible with silencer co, Gemtech, AAC and other mounts
$59.99

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25 AD-3L-14x1LH XCALIBER FIREARMS 3 Lug Adapter M14X1L to HK 3 Lug, M14x1L 3lug

3 Lug Adapter M14X1L to HK 3 Lug, M14x1L 3lug

M14x1L to 3 Lug Adapter. Convert your M14x1L threaded barrel to the Heckler & Koch 3 Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished.compatible with silencer co, Gemtech, AAC and other mounts
$59.99

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30 AD-3L-M16X1L XCALIBER FIREARMS 3 lug mount M16X1LH to HK 3 Lug, 3 lug adapter

3 lug mount M16X1LH to HK 3 Lug, 3 lug adapter

M16X1LH to 3 Lug Adapter. Convert your M16X1LH threaded barrel to the Heckler & Koch 3Lug system. Manufactured to H&K specifications out of high quality American steel. Black oxide finished.compatible with silencer co, Gemtech, AAC and other mounts, 3 lug adapter, 3 lug Mount. The 16x1 left hand threads are common for the Kriss Vector This adapter, as is, WILL ONLY PASS 9MM or smaller! We are...
$59.99

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