Featured Products SEE ALL FEATURED PRODUCTS HK UMP 4 Position Lower Housing Grip Frame Trigger Group 0 1 2 F $89900 HK MP5F A3 Factory Collapsible Stock New Type $79900 HK MP5 3 Position Ambi Lower Group 0 1 F $99900 HK MP5 4 Position Ambi Lower Group 0 1 2 F $1,49900 Sale! HK Factory SR9 Rifle With Extras $6,00000 $5,49900 HK UMP .40 Magazine LEO Marked Used $4900 Black Ops Defense LLC Logo Decal 3×3.25″ $300 Out of stock HK 416A5 Style Adjustable Gas Block $59900 HK UMP Complete Parts Kit Trade-in/De-milled from: $2,19900 HK G36K Complete Parts Kit Trade-in/De-milled $2,49900 Black Ops Defense Logo T-Shirt $1900 Out of stock Billet 416A5/MR223 Receiver by Black Ops Defense From: $99900 Out of stock Cut Down HK SL8 Factory Barrel 12.5″ G36K Length Complete $69900 Out of stock HK M110A1 417A2 Style Lower Modified Brownells Receiver $1,49900 Out of stock Sale! HK Factory G36K Barrel Complete $1,19900 $79900 Out of stock HK MP5 A3 Factory Collapsible Stock $89900 Sale! HK MSG90 Factory Hard Case New Original From: $79900 $69900 Out of stock Billet 416 Receiver by Black Ops Defense From: $79900 PSG1/MSG90 Trunnion Extension Weldment $7900 HK 416 Factory Full Auto Complete Bolt Group New $1,69900 Out of stock HK PSG1 MSG90 Style/Clone Tripod $39900 New Products SEE ALL NEW PRODUCTS HK Sling For UMP G36 SL8 USC Etc Open Bag $3500 HK Sling UMP G36 SL8 USC Etc Factory New $4900 Sale! HK G36 Factory Lower Housing 3 Position $29900 $17900 Black Ops Defense LLC Logo Decal 3×3.25″ $300 Black Ops Defense Logo T-Shirt $1900 Out of stock HK 416 CAG Geissele Style Quad Rail Foregrip Handguard Tan $27900 Out of stock HK M110A1 417A2 Style Lower Modified Brownells Receiver $1,49900 Out of stock HK Clone PSG1 MSG90 Aluminum Bipod $17900 Out of stock HK 416A5 Style Quad Rail Foregrip Handguard Black $27900 Out of stock HK 416A5 Style Quad Rail Foregrip Handguard Tan/RAL8000 $27900 Out of stock HK 416A5 Ambidextrous Mag Release $7900 Out of stock HK PSG1 MSG90 Style/Clone Tripod $39900 Out of stock HK Style Tan Enlarged Trigger Guard 416A5 G28 M110 RAL8000 $2900 Need a Custom Build?Contact Us about Our Custom ServicesContact UsBrowse Our Services HK USC to UMP HK MP-5 HK SL8 to G36 HK PSG-1 B&T MP9/TP9 HK416 MR556 HK G28 M110A1 417 Need a Custom Build?Contact Us about Our Custom ServicesContact Us Login Register Login Password Forgot password? Remember me Login E-mail I agree that my submitted data is being collected and stored. For further details on handling user data, see our Privacy Policy Password Confirm Password Minimum 4 characters