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Complete Internal set (Bolt and Hammer)

Complete internals bolt and hammer kits for various nelson based pumps. These include complete sets for 007s, line si bushmasters, lapco ghost and lapco spirits, thunder pig P1 pig gun, wintec and rebline pumps and more.

Vito asks, "What is the difference between a bore drop and a breech drop nelson marker?

Answer:
A breech drop nelson marker has the direct feed over the breech. The bolt is a larger OD (same OD as the breech which is slightly wider than the bore). When the ball falls into the breech and is pumped and pushed forward by the bolt, the ball must go up a small step into the bore.

On a bore drop nelson the bore starts inside the body, rather than the barrel and front half of the bolt is a slightly smaller outer diameter to fit into the bore. The back half of the bolt and the hammer are still the same outer diameter as the breech drop internals but the front half slides back and forth in the bore. The breech on a bore drop is slightly further forward allowing the ball to drop into the bore (still the body technically at this point on removable barrel guns). When the ball falls into the bore it doesn't need to climb that step into the bore and has a more seamless trajectory out of the marker.

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