If you have trouble making a transaction, YOU STILL CAN PURCHASE VIA PAYPAL INVOICE OR SEND USPS MONEY ORDER OR please use our paper form located here: Manual CC Form
HDPS CORP – The Home of Quality Heckler and Koch conversions services and parts since 2003, no aftermarket compromise!
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HK 416D .22 LR Cal. NIB (With 3 Magazines)
$550.00 -
HK MR 556 A1 NIB (RARE early Edition)
$8,575.00 -
HDPS Bird Cage Hk Style Flash Suppressor for Hk UMP / USC SBR’s .45 ACP/.40 S&W/9mm for Threaded Barrels in M16X1 LH
$120.00 -
UMP/USC Long Top Rail and 2 Low Profile Screws
$40.00 -
UMP/USC Short Front Rail and 2 Low Profile Screws
$30.00 -
UMP/USC Set of Rails/screws in blister pack
$125.00 -
Vertical Grip – UTG Ergonomic Ambidextrous Foregrip
$18.25 -
HK G-36 / SL8-1 / UMP .45 / USC.45 SLING by BLACKHAWK U.S.A.
$35.50

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Heckler & Koch H&K MP5 MP-5 SD .22 Long Rifle HV Semi Auto Carbine *NEW*
$529.00 -
Heckler and Koch MP5 30 Round Magazine – Genuine Made in Germany – MP5, SP5, MP5K, SP5K, SP89
$78.95 -
UK 59 Medium Machine Gun UK Vz.59
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M240 SLR Belt Fed Semi Auto 7.62×51 NATO (New in Case)
$16,800.00 -
Heckler and Koch UMP and USC Trigger Spring
$7.75 -
Heckler and Koch UMP and USC Hammer Springs RH & LH ((N E W))
$18.50 -
AR-15 or Umarex 416 D – Carbine Faux Sound Suppressor
$150.00 -
Heckler and Koch UMP and G36 (all) Hammer NEW
$38.50 -
Heckler and Koch UMP Lower Release Lever Complete with spring and axle
$29.50 -
Heckler and Koch UMP G36 USC SL8 trigger NEW
$18.50 -
Heckler and Koch USC Lower Receiver w/ Bolt Catch & Mag Release mounted NEW
$89.95 -
Sale!
SB Tactical Brace Hk and B&T Folding Brace or Rifle Stock
$84.99 -
STOCK BLOCK “B” for you Hk USC to Hk UMP conversion (Pin/Washer/Ring Style)
$165.00 -
Sale!
STOCK BLOCK “B” For your Hk USC to Hk UMP conversion (Eyelet and Thumb Screws)
$185.00
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Homeland Defense & Police Supply Corp