HKParts Services

The Quick and Dirty Explanation

What does "clipped and pinned" mean?

Answer: We are referring to the front attachment point of the trigger housing to the receiver.
Check out the receiver examples below.

Example #1
Semi-Auto Shelf HK Receiver. Clipped and Pinned HK Trigger Housing

Requires clipped and pinned trigger housings or semi auto metal trigger housing.

Example #2
Push Pin HK Receiver and Trigger Housing Push Pin HK Trigger Housing

If your HK receiver looks like example #1 then you have a receiver that needs a clipped and pinned trigger housing or a semi auto metal trigger group.

There you go, happy shopping.

Trigger Housings Further Explained

Can the housing styles be swaped?

Short Answer: No.

Long Answer: Regular trigger housings can be altered through our "clipping and pinning service" to fit on a semi-auto shelf.

Example #3
Incompatible HK Trigger Housing Comparisons

Example #4
Incompatible Clipped and Pinned HK Trigger Housing

Example #5
Compatible HK Trigger Housing Comparisons

Example #6
Compatible Clipped and Pinned HK Trigger Housing

What the differences?

Answer: Regular trigger housings attach to the receiver with small push pin. Semi-auto trigger housings attach be inserting the semi-auto shelf into the trigger housing.

Example #3
Left - Un-Altered Trigger Housing.
Right - Clipped & Pinned Housing HK Trigger Housing Comparisons

Example #4
Clipped and Pinned
HK Trigger Housing Clipped and Pinned HK Trigger Housing

Example #5
Semi-Auto Metal Trigger Group HK Trigger Housing Comparisons

Example #6
Push Pin Housing with Small Push Pin Installed HK Trigger Housing Comparisons

Clipping & Pinning Service For HK Lower Housings

Price $44.95

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